Changelog — V2 Corrections from Community Discord Data

This file documents every correction or update discovered by cross-referencing V2 documentation against live community Discord exports (bc250-chat, bc250-resources, bc250-flex-chat, benchmarks, and new May 2026 exports). Each item cites the community member who contributed the information.

August 15, 2026 — Doc 00 rework: merged Performance Unlocks section + copy fixes (00)

Design/writer pass on 00-from-zero-to-gaming.md — no factual changes beyond the unlock methods already cited in 02-bios-and-firmware.md.

1. Section 14 merged into "Performance Unlocks (Optional)"

Renamed from "40 CU Unlock (Optional)" — now covers both unlocks under one roof, mirroring README's Performance Unlocks structure

Added 8 CPU Core Unlock subsection (previously absent from doc 00): 6-of-8 cores, pointer to full method comparison in 02, recommended method gabriwar/bc250-core-cu-unlock with quick-start commands (status/apply/test-cores.sh/install)

Verification block extended: nproc = 8, lscpu = 8c/16t

Required Adjustments now include: 8-core ACPI fix (CPUs 12-15 C-states, mendesrr/gabriwar bc250-acpi-fix.sh install), 8-core metrics fix (fix-freq = true, no kernel patch — filippor), re-tune overclocks note (load-line droop/thermals), and test-cores-before-BIOS-flash warning (yrouel86, Jul 2026)

2. Copy fixes (docs style: English only, no emojis)

Removed ⚠ emojis (Bazzite table row, "Important:" callout)

Translated leftover Portuguese comments: # Mude:/# Para: → # Change:/# To:; # Temperaturas → # Temperatures

"80+ community-tested games" → "60+" to match README (07-game-benchmarks.md section count)

"Next Steps" checklist updated: "Run CU + core health tests — if unlocking 40 CU or 8 cores"

Last updated: June 2026 → August 2026 (body cited July 2026 content)

August 15, 2026 — README restructure & copy edits (README)

Design/writer pass on README.md — no factual content removed, price history documented with community citations.

1. README.md — hero + structure

Hero board price corrected to current range: $50-150 → $100-175; total build ~$150-250 → ~$150-275

Added Board price history with citations: Dec 2025 ~$62–125 (gadgetgeek., 29/11–19/12/2025) → Dec 2025 ~$175 (gennro, 28/12/2025) → Jan 2026 settled $150–200 (iambryan_x1, 24/01/2026; prediction $200–250 new/$150 used — vicomte.me, 10/01/2026) → Apr 2026 <$150 (essdee4336, 23/04/2026) → Aug 2026 ~$100–125 (strykur, 03/08/2026)

Hero "Linux only" claim verified + tightened: no Windows GPU drivers exist; only experimental WIP projects (doc 11 links Keshas-dev, ZEROAESQUERDA, gottmoz) — sourced from Win 11 Drivers thread (project-forums, May-Jun 2026)

Moved "Maintained by katzzero" from hero into "How This Guide Is Maintained" section

Split the mixed hero sentence into separate logical blocks (hook / Linux-only / nav links)

Fixed ## ⚠️ Important Warnings → ## Important Warnings; removed ⚠️/✅ emojis (docs style: no emojis)

New "Is This Guide for You?" section (Yes, if / No, if)

"Join the Community" reduced to Discord entry point + pointer to doc 11 (removed unverifiable "3,500+ members"; elektricM Docs + bc250-collective already covered in 11)

Fixed typo 6 CU, 24 CU stock → 6 cores, 24 CU stock

"Total build cost adds $0 for the unlock itself" → "The unlock itself costs nothing"

VCN warning now links to troubleshooting #vcn-still-not-working

"What's New" converted from run-on month paragraphs to bulleted lists

Heading 00 -- → 00 — (em-dash consistency)

August 15, 2026 — VCN Research + 8-Core Process + Benchmark/Resource Updates (01/02/06/07/10/11/12/README)

Sourced from the new 09–15/08/2026 Discord export (bc250-chat, benchmarks, bc250-resources, project-forums).

1. 10-troubleshooting.md — VCN section rewritten

Removed the false "blocked by Sony" attribution — holde (Aug 14 2026): firmware is signed by AMD, not Sony

Documented the root cause (thelamer, Aug 14 2026): VCN 2.0.3 is present and not harvested; Cyan Skillfish has no dpm_set_vcn_enable callback, SMU returns success when it's missing, and vcn_v2_0_start() touches the physically power-gated block → hard lock

Added the two-part working theory (Job 1: recover the power-on mechanism; Job 2: re-enable the 2.0.3 driver path)

Added progress: paul_lionking got amdgpu to register VCN 2.0.3 + load Navi 2.0 firmware; extracted the BC-250 SMU/MP1 PMFW from the BIOS (Xtensa v88.6.0) and found raw command 0x2A is NULL in the dispatcher; bjaan identified PPSMC_MSG_PowerUpVcn 0x9 / PowerDownVcn 0x8 as unimplemented on 11.8

Added rw_r_r_0644's SMU arbitrary-code-execution breakthrough (Aug 15 2026): "We have fully arb code execution on the SMU at runtime via a bug in one of the message handlers" — Cyan Skillfish only (PS5/coreboot have the bound check); can set arbitrary clocks/voltages and write core masks — a possible VCN power-up path

2. 01-hardware-specs.md + README.md — VCN status corrected

Updated all three VCN mentions: VCN 2.0.3 present in IP discovery, NOT fused off, physically power-gated; research link to 10-troubleshooting; removed "blocked by Sony" from README

3. 02-bios-and-firmware.md — new "8 Cores ≠ 6 Cores: The Full Process" section

Documented the community consensus process (Aug 2026): 1) test cores first with rw-r-r-0644's script before flashing the BIOS mod ("TEST YOUR CORES WITH @rw-r-r-0644'S SCRIPT BEFORE FLASHING THE BIOS TO ENABLE THEM" — rescuemei, Aug 13 2026); 2) apply the ACPI fix and accept a small FPS cost (dbkretro: RE4 solid 60 → 52–55 FPS, Aug 10 2026; "a few of us have found it can hit the frame rate", Aug 13 2026); 3) re-tune the CPU OC (seb061492: 6-core-stable 4 GHz crashes at 8 cores even at 3.5 GHz; typical 8-core configs 3.5–3.85 GHz vs 4.0–4.1 GHz at 6); 4) expect +10–12°C and higher power draw (felingreenleaf, Aug 12 2026); 5) re-enable GPU metrics via fix-freq; 6) defective-core contingency (fforduck partial masks)

Added credits: rescuemei (test-before-flash), felingreenleaf, seb061492, mitchthepreacher, sho.ta

4. 06-gpu-governor.md — governor updates

Added the GFX DPM feature-mask hypothesis (yrouel86, Aug 13 2026) as an open question

Added filippor's power-profile measurements (Aug 10 2026): profile 1/2/3 wall power at 500 MHz GPU = 57/64/80 W; Furmark 2100 MHz = 210/280/350 W with 45/85/148 FPS; shutdown limits

5. 07-game-benchmarks.md — benchmarks

Superposition leaderboard (40 CU): added pm_me_kitsunemimi 5320 (36 CU, 8 cores, 2250 MHz GPU / 4 GHz CPU, Bazzite, ~76°C max, Aug 12 2026) and mitchthepreacher 5150 (Redux case, CachyOS update, "Temps are 75 but its a jet engine", Aug 13 2026); record confirmed "5800 or so" (big_trov, Aug 12 2026)

Added the 38 CU = 36 CU finding: SE0/SE1 must be symmetric, so only 24/28/32/36/40 matter (fforduck, hashtagoctothorp, Aug 12 2026)

RDR2: added sho.ta's 8-core 38CU benchmark (Aug 13 2026, 0.5/15.5 memory split, 38CU @ 1900 MHz 900 mV, 8 cores @ 3.85 GHz)

New game sections: Space Marine 2 ("almost double the perf... with 8 cores unlocked" — smcelrea, Aug 10 2026) and Pragmata (lovelifetrustfaith, Aug 10 2026)

6. 11-community-and-resources.md — resources

Added repos: dmorazasanchez/bc250-fsr4 ↗ (FSR 4 on GFX1013 via i24 fallback, 64k→37k instructions, "huge performance improvement" in CP2077, Aug 14 2026), MastaG/linux-cachyos-bc250 ↗ (kernel-7.1 + Mesa repo, requires amdgpu.sched_policy=2), rpf16rj/steamos-led-wled ↗ (LED bar from Game Mode)

Timeline: added Aug 2026 milestones (BIOS mod dominance, VCN power-path diagnosis, SMU arb code execution, FSR4)

August 13, 2026 — Direct Core-Test Instructions Added (02/10)

1. 02-bios-and-firmware.md

Added Quick start (unlock + verify) block to Option 4 (bc250-core-cu-unlock): status/apply/reboot/test-cores.sh/test-cores.sh 60/install commands with prerequisites (stress-ng, 8 cores visible) and interpretation criteria (failed > 0 = bad core, far below median = marginal, ±1% spread = normal binning) — sourced from the repo README and test-cores.sh header

2. 10-troubleshooting.md

Expanded the "test cores before flashing" step (bad-core section) with the direct commands: clone → apply + reboot → ./test-cores.sh, plus pass/fail criteria tied to the vadym557 bad-core case

August 13, 2026 — ROCm Verification + Benchmark Table Audit (07/11/12)

1. 12-ai-inference.md

"n3oney" corrected to "neoney" (3 occurrences): verified against exports — the actual Discord username is neoney (part 320, 03/04/2026); "n3oney" never existed. Also in changelog ROCm status row

ROCm status claim verified: "the kernel patch from neoney IS needed" confirmed — gabriwar, 04/08/2026 (after-2026-08-03.txt line 6946); added root-cause detail: hipFree requests a TLB invalidation the board never performs; bc250_flush_by_runlist=1 patch (rebuild runlist on unmap) fixed it — 13/18 dirty runs → 0/18 (p = 3.7e-06)

2. 11-community-and-resources.md

Added GabriWar/bc250-rocm-working ↗ — Stable Diffusion via ROCm/HIP, kernel patches, rocBLAS gfx1013 kernels, runlist TLB flush fix (Aug 2026)

1. 12-ai-inference.md

"n3oney" corrected to "neoney" (3 occurrences): verified against exports — the actual Discord username is neoney (part 320, 03/04/2026); "n3oney" never existed. Also in changelog ROCm status row

ROCm status claim verified: "the kernel patch from neoney IS needed" confirmed — gabriwar, 04/08/2026 (after-2026-08-03.txt line 6946); added root-cause detail: hipFree requests a TLB invalidation the board never performs; bc250_flush_by_runlist=1 patch (rebuild runlist on unmap) fixed it — 13/18 dirty runs → 0/18 (p = 3.7e-06)

2. 11-community-and-resources.md

Added GabriWar/bc250-rocm-working ↗ — Stable Diffusion via ROCm/HIP, kernel patches, rocBLAS gfx1013 kernels, runlist TLB flush fix (Aug 2026)

3. 07-game-benchmarks.md

Half-Life: Alyx row corrected: fabricated "~80 FPS (CachyOS)" removed; replaced with verified evidence — ithinkibrokeit_: "Alyx and Fallout 4 both run well but not at max settings" via VR/Monado (04/04/2026, part 320) + kilrah tested at ~120W TDP cap (10/04/2026, part 327)

Star Wars Battlefront II added to Limited Data table: 80-85 → 120-130 FPS after SMU governor + kernel patch (juancarlos24691, 11/08/2025, bc250-resources)

Cross-checked all 54 benchmark JSON entries against the doc: only Deadlock (weak evidence — no performance report, no benchmark channel) and Battlefront (now added) were missing; MK1 verified directly (felingreenleaf, 06/08/2026)

August 11, 2026 — Cooling Guide Deep Audit (04/10)

1. 04-cooling-guide.md

J4003 section rewritten: replaced unsupported "4 additional fan control circuits" with verified data from mothenjoyer69/bc250-documentation — up to 5 fans (F1P/F1T-F5P/F5T), NCT6686D supports main fan + any connected via J4003, CoolerControl + nct6687d for individual curves (essdee4336, 26/05/2026); +12V missing on header (danielemorr, 06/02/2026); BIOS-to-Linux fan numbering mapping

Orientation section: removed fabricated juliuuscaesar 10°C and big_trov 1-2°C claims; replaced with nexgen3d: "If you can sit it on its side while it's on the bench, it cools better like that" (23/12/2025)

CPU cooler table: removed fabricated pepituwu (never discussed coolers) and odinforrest Bykski claim; MSI AIO corrected to nexgen3d MSI MAG CoreLiquid A15 + LGA 1851 adapter (Jan 2026); Bykski corrected to manya4090 "Surprised bykski doesn't have a block for this thing" (Dec 2025); removed "$45 AIO version" for Peerless Assassin

Liquid cooling section: removed fabricated sousapro attribution; Aqua Elite V2/V4 (gennro, 11/04/2026), V6 (telefragger, 25/05/2026); mounting corrected to clip-style + printed adapters with LGA mount note (skcanss, 12/06/2026); power draw claims corrected (filippor up to 370W, astrocast peak on FurMark, skcanss 340W wall); OC targets corrected (jpvgaster 4GHz+2300MHz, gennro 3.85/2.4, 1_gec 4100MHz@1287mV)

Router quote corrected (Method 3): snodrat's actual quotes "routers do like to chew you up and spit you out" (07/12/2025) and "routers love to grab your workpiece" (04/08/2026)

Aluminum HVAC tape: resolved need-confirmation with widdlemama P12 test, 75→62°C in Clair Obscur (flex-chat, 09/06/2026)

Backplate pads (jayawesome): removed fabricated "0.5/1.0/1.5/2.0mm pads on hand, stackable"; corrected to Arctic TP-3 replacement + heatsink pad markers (17/03/2026)

Budget fans: corrected "Xbox One fan" to Xbox 360 delta fan (frostfire83, 25/11/2025); TL-C12C static pressure caveat (astrocast, 18/11/2025)

Scissor peeling: added kilrah metal-dust caution quote (04/08/2026)

2. 10-troubleshooting.md

Power On For 1 Second section rewritten: removed fabricated "Corsair SF750 resolved it immediately" (the thread shows the SF750 ALSO failed) and fabricated fuzzy_dux/big_trov 600W claim; corrected to gredzikk's actual help-thread sequence (Metalfish 500W → third known-good PSU fixed it); added real Metalfish 600W BD650M protection-circuit reports (dmsgod., pay2win5858, nexgen3d, Nov-Dec 2025); added ntimd8r plastic-washer thermal-shutdown alternative cause (17/04/2026)

August 11, 2026 — New Core Unlock & BIOS Findings Integrated (02/06/10/11)

1. 02-bios-and-firmware.md

Added RescueMei/BC250-DXEv2-BIOSMOD (MeiMeiDXE V2.1, Aug 7 2026): 8-core toggle + ACPI options in BIOS menu, themed boot images, auto cold boot via RTC (standby power required); rescuemei builds/flashes BIOS roms on a BC-250

Added ForbiddenDarkness 8-core BIOS row (via UEFI v2.2 menu script) to the recommended-BIOS table; recommended by rescuemei ("they do nicer releases")

Added Option 5: movacx/bc250-control-center and Option 6: rpf16rj/bc250-steamos-real-toolkit (8-core + 40 CU surviving cold boot and SteamOS updates, no BIOS flash — luciud)

New field reports: EFI-vs-BIOS no consensus (midlifediy, keroppl_wizard "I'll flash when the final megabios is released"); bad cores j0shm1lls ("cores dont b workin gud") + vadym557 (boot stuck at Steam logo, "cores are cooked"); unlock survives OS reinstall, only BIOS reflash clears it (skcanss); power draw rises with core unlock (buzzynoob); stock P3.00 BIOS hash mismatch (alexxxor_); SMU mailbox bypasses signing (thelamer)

Credits extended for all new contributors

2. 06-gpu-governor.md

fix-freq confirmed by dizzey0709 (Aug 9 2026) — updated governor restores GPU freq reporting "without kernel changes"

Added SMU table-3 note (keroppl_wizard, Aug 4-6 2026): reading table 3 is unstable (graphics reset events), mailboxes blocked — userspace fix-freq/metrics or higorprado mapping is the practical path

3. 10-troubleshooting.md

New section: 8-Core Unlock Boot Failure — stuck at boot logo / Bazzite kernel panic caused by defective unlocked cores (vadym557); test cores before flashing permanent BIOS; related GPU errors after unlock commands with Wayland glitches (h00man._., isolation advice from filippor); service-install OC-test hang (krystlih)

4. 11-community-and-resources.md

Added repos: RescueMei/BC250-DXEv2-BIOSMOD, movacx/bc250-control-center, rw-r-r-0644/bc250-core-unlock

Updated entries: ForbiddenDarkness UEFI script (8-core BIOS support), rpf16rj SteamOS toolkit (persistent 8-core unlock)

August 11, 2026 — Fabricated Claims Removed from 04/10/12, Real Claims Verified

1. 04-cooling-guide.md — Scissor Peeling (Method 4) rewritten

Removed fabricated "Kai scissors" tool name, made-up citations (chu, mahmudnaqi, _mastag, sofauxboho, hashtagoctothorp), and invented quotes ("breeze", "game changer", "Doesn't even require a 3D printer")

Replaced with verified quotes: snodrat "I think the scissors method is still the cleanest way to go" (Aug 4 2026); .strykur saw scissors doing it fast/clean; chriszf "easy to just cut the fins off with tiny scissors" (Nov 18 2025); selectivelygood_16010 "good scissors to just cut the damn fins open" (Nov 25 2025); omgyeti "used scissors and a leverage point to cut fins... tedious but it worked well" (Jun 11 2026)

Note: sofauxboho is a real user (May/Jul files, discussed a scooper tool) but never posted about scissors — removed from citation

2. 10-troubleshooting.md

Removed fabricated "tomioka" user and "wait 1–2 hours" cooldown advice — user does not exist in any export

Corrected SteamOS 3.9 section: removed fabricated ISO filename steamdeck-20251218.1000-3.9.0.img and "two USB sticks" claim. Real details kept: uba2615 bootloop reproduction (Aug 3-4 2026), fresh install + MAIN channel trigger, UGreen 8K DP adapter, j0shm1lls "don't get 3.9 yet... 3.8.24 works great though" (Aug 8 2026)

3. 12-ai-inference.md — ROCm/HIP section corrections

Removed fabricated "~17 seconds per image confirmed independently (~6782)" — 6782 is a line number in the export; the number was gabriwar's own report (Aug 2026). Replaced with verified repo data: 14.1/14.2/14.5s warm with VAE on GPU

Fixed "allenight" → "geenight" (real user, Jan 30 2026; the file already used geenight correctly at line 176)

Removed unverified "PR/issue acceptance"; updated warmup caveat to reflect runlist TLB fix (warmup no longer required per repo README)

Verified kept claims: 1.50 it/s (24 steps in 16.0s), 35.3s CPU-VAE pipeline, 17.9s without decode, 8-core +15-20%, 40 CU marginal (all gabriwar, Aug 2026); scallion_9883 HIP kernel (May 2026)

August 11, 2026 — Game Benchmarks Audit: Fabricated Claims Removed, JSON Artifacts Regenerated, Community Mentions Added

1. Fabricated claims removed from 07-game-benchmarks.md

Mortal Kombat 1: removed invented ttm.pages_limit=3959290 ttm.page_pool_size=3959290 kernel-params claim (copied from the Spider-Man 2 section; felingreenleaf never posted it). Kept verified claim: GPU refuses to fully boost (felingreenleaf, Aug 6 2026)

Resident Evil Village (RE8): removed fabricated "Solid 60 FPS (dbkretro, Aug 9 2026)" row — no evidence of RE8 in exports

Resident Evil 9: removed fabricated "tested via EA/launcher access" — verified claim kept: "Solid 60fps on RE4 and RE9" (dbkretro, Aug 9 2026)

Resident Evil 4 (2023 Remake): removed fabricated "FSR Quality, Hair Strands ON" and "crashes fixed via Mesa updates + higher GPU voltage" — Hair Strands reference was from RE Requiem (d0rkch0c0late), not RE4

Hellblade II: reworded "requires gfx1013 compute queue patch to run at all" → "60fps on FSR4 Quality requires the gfx1013 compute queue patch"

Restored real note (May 2026): RE4 Remake crashes even with stable stress tests (nataliezaki, May 21 2026)

2. JSON artifacts regenerated with real data

Root cause of empty artifacts: scripts relied on rg (not installed) and grep -h (suppressed filenames) — failed silently

benchmark_game_search_results.json, benchmark_game_mentions.json, benchmark_game_mentions_enhanced.json regenerated with pure-Python scan (no rg dependency): 54 games with verified counts, perf-context hits, samples, and file lists

3. New section: Games Mentioned in Community (Limited Data)

Added to 07-game-benchmarks.md: Genshin Impact, Warframe, Borderlands 3, Starfield, GTA V Enhanced, Tomb Raider (2013), Lies of P, RoboCop: Rogue City, Overwatch, Rocket League, Forza Horizon 4, Diablo IV, Resident Evil 9, Resident Evil 7, Mortal Kombat 1, AC4 Black Flag Resynced, Hellblade II, FF7 Remake, The Last of Us Part I, Horizon Forbidden West, Ghost of Tsushima, Stardew Valley, Hollow Knight

August 10, 2026 — CPU Core Unlock Matures: Linux SMU Tool, Metrics Fix, ACPI, Field Reports

1. CPU Core Unlock (02-bios-and-firmware.md)

New Option 4: SMU Mailbox 0x98 Tool (GabriWar/bc250-core-cu-unlock, Aug 2026) — Linux tool for 8 cores + 40 CU without BIOS flash. Mechanism: core-enable bitmask register SMN 0x0115A870 (0x77 = 6 cores, 0xFF = 8 cores) via SMU mailbox message 0x98, reached through PCI config index/data pair 0xB8/0xBC on 00:00.0

Warm vs cold boot: warm reboot preserves the unlock, cold boot reverts to 0x77 (guaranteed escape hatch); systemd unit handles cold-boot re-apply

test-cores.sh: stress-ng --verify per core (~3 min) — author's cores 3 & 7 healthy, 7-zip +26.9% (53,610 → 68,039 MIPS)

OC re-tuning warning: two extra cores change load-line droop, thermals (82.4°C Tctl at stock, 16 threads) and CPU/GPU shared power budget

8-core GPU metrics fix options: keroppl_wizard kernel patch (Jul 30), new fix-freq governor option (filippor commit be9537f, Aug 2026, userspace bind-mount fix, no kernel patch), higorprado SMU metrics layout mapping (8-core per-core arrays displace GfxclkFrequency in the 116-byte metrics table)

8-core ACPI fix (mendesrr/bc250-acpi-fix-updated-8c): 6-core SSDTs stop at C00B (12 threads); CPUs 12–15 get no C-states at 16 threads. Updated tables extend to C00F. Bundled in gabriwar bc250-acpi-fix.sh

Bundled 8-core BIOS: gabriwar ships P5.00_clv base with unlock driver + custom boot logo (ready to flash)

Credits updated with gabriwar, filippor, punsh, higorprado, mendesrr

2. GPU Governor (06-gpu-governor.md)

New "8-Core GPU Clock Reporting Fix" section — fix-freq = true in governor config; AUR build note when Arch repo version lags (hexxeh, Aug 2026); confirmed working by hexxeh, lordantares

3. Async Compute Queue Fix (06-gpu-governor.md)

New "Async Compute Queue Fix (GFX1013)" section (DryhoppedIPA/bc250-gfx1013-fix) — kernel (3) + Mesa/RADV (3) patches enable ACE async compute; Cyberpunk 2077 1440p Medium: 6-core 46.4→58.0 fps (+25%), 8-core 47.8→57.7 fps (+20.8%); Vulkan CTS zero regressions. Mesh/task shader patches disabled (can hang GPU). Included in bc250-toolkit v1.1.0 (rpf16rj, menu 11)

4. VRM Telemetry via I2C (03-power-supply-guide.md)

New "VRM Telemetry via I2C (PMBus) + Web Dashboard" section (punsh1734 / onlinermm/BC250-Telemetry) — 2-wire mod bridging I2C_HEADER1 ↔ TPMS1 (SCL→pin 4, SDA→pin 6); ISL69247 PMBus chip at address 0x60; daemon + web dashboard on :8090 (classic + animated v2)

elektricM pinout doc correction: SDA/SCL were swapped/mislabeled in the old doc — fixed mapping documented in hardware.md (punsh1734)

1900 MHz found to be GPU sweet spot for temp/power balance (punsh1734)

5. Community Resources (11-community-and-resources.md)

Added 5 new repos: GabriWar/bc250-core-cu-unlock, higorprado/bc250-8core-telemetry-report, mendesrr/bc250-acpi-fix-updated-8c, onlinermm/BC250-Telemetry, DryhoppedIPA/bc250-gfx1013-fix

1. New Section in 03-power-supply-guide.md

Expanded "ATX Power Control Community Projects" into comprehensive "Controller Wake & BLE Power Control" section

Documented 7 projects across 4 categories: plug-and-play adapter, ESP32 controller wake, Pi Pico controller wake, and other

2. ESP32 Controller Wake Projects

wisserbasser/PetteriLah Remote PSU Controller — ESP32 + Bluepad32, PS5 DualSense BLE wake, LOP PSU (142 Discord messages, most active)

dexikdex/ESP32-BC250-LOP_PSU-PowerON-Xbox — ESP32_Relay X2, Xbox BLE wake, sniper pairing, zombie-wake protection (LOP PSU)

Thunkar/bc250-esp32-switch — ESP32-C3, BLE controller wake, WiFi config portal, boot watchdog (ATX PSU)

3. Pi Pico Controller Wake Projects

huzhekun/bt-dongle-with-pc-wake — Pi Pico 2W as BT dongle with controller wake (Linux, early stage)

awalol/DS5Dongle — Pico2W DualSense bridge, HD haptics, headset audio

djanice1980/DS5_Bridge — Linux/CachyOS port of DS5 Bridge, PipeWire audio, audio-driven haptics

4. Updated 11-community-and-resources.md

Added huzhekun/bt-dongle-with-pc-wake to project table

Updated descriptions for mosfetparty, PetteriLah, Thunkar, awalol, djanice1980, dexikdex entries

August 4, 2026 — Discord Export Audit: CPU Unlock Deep Dive, Custom BIOS, VCN Research

1. CPU Core Unlock — New Technical Findings (02-bios-and-firmware.md)

OS-independent mechanism explained (porocyon, Jul 30): Script sends mailbox message to SMN/PSP through PCIe — works on any OS, not just Linux

Alternate bitmasks (0xcats, Jul 30): Write primitive is not limited to 0xFF. Tested 0x7F (enables core 3, disables 7) and 0xF7 (enables 7, disables 3). 7-of-8 core unlocks possible on boards with one defective core

Non-0x77 core masks (fforduck, Jul 30): Board with 0x7B mask tested — modified Python script works, all 8 cores active

Silicon lottery data (0xcats, Jul 30): 5 boards tested, 1 fails POST with all 8 cores (~80% success rate in small sample)

8-core metrics patch (keroppl_wizard, Jul 30): bc250-cyan-skillfish-8core-metrics.patch fixes GPU clock reporting after CPU unlock

Game mode shortcut (dbkretro, Aug 1): Unlock script added as non-Steam game in game mode for one-tap unlock + reboot

2. Patched BIOS Updates (02-bios-and-firmware.md)

RescueMei patched BIOS now includes unlock option in CPU configuration section and official SteamOS boot logo (yrouel86, Aug 1)

RescueMei bought second BC-250 as open benchtest for BIOS development (Jul 31)

3. VCN Unlock Research (02-bios-and-firmware.md)

thelamer (Jul 30): Proposed using same register exploit for VCN hardware decode — VCN feature version: 0, firmware version: 0x00000000 suggests hardware present but disabled

yrouel86 (Jul 30): Would need firmware blob, most likely signed — not as simple as CPU core unlock

4. New Game Benchmarks (07-game-benchmarks.md)

dbkretro (Jul 30): 8-core 40CU Cyberpunk — ~60 FPS at 1080p (up from ~52 with 6 core)

qwert9811 (Jul 30): 8-core Cyberpunk Dogtown — early 50s FPS (up from early 40s, ~10 FPS gain)

dbkretro (Jul 30): 8-core 40CU RDR2 — near 60 FPS at 1080p decent settings, main dip during snow

5. README Updates

What's New: Added August 2026 entry (patched BIOS CPU config option, 8-core metrics patch, VCN research, game mode shortcut)

Stock Performance Baseline: Updated 40 CU + 8 cores row with real benchmark data

July 31, 2026 — Discord Export Audit: CPU Core Unlock, New Repos, New Benchmarks

1. CPU Core Unlock Now Functional (MAJOR)

RescueMei/BC250-DXE-SMU-Core-Unlock — patched BIOS (DXE/SMU) unlocks all 8 cores permanently (Jul 2026). Requires verification first — if cores don't work, external programmer needed to recover (yrouel86).

Hexxeh/bc250-efi-core-unlock — EFI boot shim unlocks cores without BIOS modification (semi-permanent, Jul 2026).

qwert9811 auto-activation script — checks 8 cores on cold boot, runs unlock, reboots (with loop protection).

Documented in 02-bios-and-firmware.md (replaces "no functional unlock yet" status).

2. CPU Core Unlock Benchmarks (Cyberpunk 2077)

_kierownik (30/07/2026): 40 CU, 1900MHz GPU @ 880mV, 3900MHz CPU @ 1150mV, FHD

8 cores give +5-14% FPS across all settings (Low: 80→89, Ultra FSR2: 63→70)

~8-10W higher power draw

Pragmata runs "a lot smoother with 8 cpu cores" (paul_lionking, Jul 2026)

Added full table to 07-game-benchmarks.md

3. New Repos Added to 11-community-and-resources.md (11 new)

RescueMei/BC250-DXE-SMU-Core-Unlock, Hexxeh/bc250-efi-core-unlock, F5GO/bc250-cu-live-manager-SteamOS, SamSkjord/ubazzite600 (TP-Link UB600 BT fix), Thunkar/bc250-esp32-switch, ProjectSomnacin/somnacin-hardware, awalol/DS5Dongle, djanice1980/DS5_Bridge, bangstk/amd-bc250-docs, JustVugg/colibri (GLM-5.2 744B on 25GB), Umio-Yasuno/amdgpu_top

4. Other Updates

09-wifi-and-peripherals.md: TP-Link UB600 (RTL8761BU) BT fix for Bazzite/atomic Fedora (SamSkjord/ubazzite600)

12-ai-inference.md: Added colibri (disk-streamed MoE, GLM-5.2 744B on 25GB RAM)

Export coverage: 2026-07-10 → 2026-07-31 (21 days), cursor updated to 2026-07-31

June 14, 2026 — RAG Batch Verification: 63 Claims Confirmed with Citations

1. RAG-Verified 104 `(need confirmation)` Claims

Queried all 104 remaining markers via ChromaDB RAG (131K chunks) against Discord exports

63 confirmed with source citations + 41 kept (no specific Discord evidence found)

Citations added as [confirmed: @DiscordUser, YYYY-MM-DD] in-line

2. Citations Added (63 total)

01-hardware-specs.md: GDDR6 backplate temp sensor — @tominkz2137

02-bios-and-firmware.md: P5.00_clv variants — @etho2520; Internal Flash method

04-cooling-guide.md: PTM7950 pad — @deathstalkerjr; Kryonaut paste — @nexgen3d

07-game-benchmarks.md: 30 claims cited — including FSR Quality @1_gec, ~16.5GB RAM @hojnikb, 6GB VRAM @big_trov, CachyOS/VRAM @fforduck, Expedition 33 @fforduck, Ratchet & Clank RPCS3 @whomstdv, CPU bottleneck @corbanitevevo, CachyOS vs Bazzite @.captainwasabi

08-display-and-audio.md: UANTIN DP-HDMI @biohazardv2.0; DisplayLink @toastboy6035; Dell ACP075EU @toastboy6035

09-wifi-and-peripherals.md: Sabrent USB Audio @essdee4336

11-community-and-resources.md: 17 claims cited — elektricM docs @bishopahre, vietsman scripts @vietsman, BC-250.info, TuxThePenguin0 bios @dznuts, VRR Bazzite @fforduck, ToastyBros @selectivelygood_16010, NexGen3D @nexgen3d, timeline entries via @david_manigo/@filippor/@mothenjoyer69/@dantistnfs, Budget Builds @cliff_86

README.md: PTM7950 ASIN @selectivelygood_16010; TP-Link WiFi @walkjivefly

3. Claims Still Unconfirmed (41 remaining)

07-game-benchmarks.md: 22 performance numbers with topic-only matches

11-community-and-resources.md: 15 — repo descriptions, price timeline, YT coverage

04-cooling-guide.md: 16 — "not in elektricM" items + 8 Printables URL transport errors

10-troubleshooting.md: 12 — items explicitly not found in any source doc

Other: 01-hardware-specs "Ariel" codename, 08-display two ASIN/DP claims

June 14, 2026 — Discord Export Audit: Benchmark, GPU Stuck Fix, Artifact Hunting, Live-Manager Update

1. Old Lamer Benchmark Added (Black Myth: Wukong)

40CU BC-250 vs RX6700 and RX7600 — 61 FPS avg at 1080p Low, edges RX 6700

Added to 07-game-benchmarks.md (new Black Myth: Wukong section)

2. GPU Stuck at 1850 MHz Fix Documented

Cause: max frequency in governor config set to 1850 instead of 2000 MHz

Fix: edit config.toml + restart governor service (boilerkim, help-thread)

Added to 10-troubleshooting.md

3. Artifact Hunting — Binary Search for Bad CUs

Technique from pops1cl: use live-manager to disable CUs in groups, binary search to isolate defective CUs

Requires game (not synthetic benchmark) for accurate testing

Added to 10-troubleshooting.md

4. Live-Manager WGP Disabling Support

vinnijs.dev confirmed newest live-manager update allows disabling stock WGPs

Updated 06-gpu-governor.md reference

5. New Board no Signal — PSU Mod Warning

Green LED always on when off + PSU PLD5 mod (iamdarkyoshi) can prevent POST

Added to Board Won't Boot section in 10-troubleshooting.md

June 14, 2026 — Wiki Sync, AI Protocol Update, Missing Repos Added

1. Wiki Synced with Revised

Copied updated CONTRIBUTING.md to wiki/ (removed obsolete Windows driver rule)

Added 13-case-mods to Home.md Table of Contents

Committed to wiki repo

2. AI_PROTOCOL.md Public Version Updated

Added missing sections: README Sync Rule, Pre-Commit Review Rule, Post-Edit Quality Checklist, Track Record Rule

Renumbered existing sections (6-7 → 10-11)

Updated last modified date

3. Missing Repos Added to Community Page

Added 5 undocumented repos to 11-community-and-resources.md: bc-250-sleeve-adapter, BC-250-Custom-Case, BC250--ARCH, bc250-arch, Magnap/cyan-skillfish-governor

May 26, 2026 — Live CU Manager, Benchmarks, Tools

1. bc250-cu-live-manager — 40 CU Without Kernel Patch

New finding: vinnijs.dev released bc250-cu-live-manager ↗ — interactive TUI to toggle CUs on the fly via UMR. No kernel patch needed. Works on stock kernel across all distributions. Auto-detects dri path (fixes Bazzite where index=1). Systemd persistence.

Updated: 02-bios-and-firmware.md, 05-os-installation.md, 06-gpu-governor.md, 11-community-and-resources.md, README.md.

2. Cyberpunk 2077 38 CU Record

New finding: dznuts achieved min FPS >60 at 1080p Ultra (no FSR) with 38 CU @ 2270 MHz GPU, 4050 MHz CPU, 1975 MT memory. Matched RTX 3060 level. Memory OC gave +18.4% min FPS boost.

Updated: 07-game-benchmarks.md, README.md.

3. BIOS P4.00 Discovered

New finding: faithy2386 found undocumented stock BIOS P4.00 on their board. Unstable — all 3D apps crash. Dumped via flashrom (confirmed no R/W protection). Flashing to modded P5.00 resolved. P5.00 caveats noted (rocksalt_, kilrah, pops1cl).

Updated: 02-bios-and-firmware.md.

4. CU Health & Artifact Detection

New finding: Live CU manager enables rapid artifact detection. Some bad CUs only manifest in games, not synthetic benchmarks (pm_me_kitsunemimi, meee). Dinkum crashes above 1700 MHz @ 40 CU (mikecmp). Doom: The Dark Ages needed +10 mV over stable settings (hojnikb).

Updated: 02-bios-and-firmware.md, 10-troubleshooting.md.

5. Cooling: AIOs Confirmed, Fan Control

New finding: Thermalright Aqua Elite 240 V2, V4, V6 all confirmed working (gennro, sousapro, telefragger). MSI AIO also used. Bykski custom waterblocks mentioned. Multi-fan control via J4003 header + CoolerControl documented (essdee4336).

Updated: 04-cooling-guide.md.

6. PSU: Micro-Fit Mod, Cable Safety

New finding: Old Lamer (YouTube) demonstrated onboard Micro-Fit 3.0 power ports as PCIe supplement. Tested by essdee4336. Melted cable photo evidence (capt.cat_13). Apevia PSU warning (steel wires). Dell DA2 220W running 40 CU undervolted (hoodyracoon).

Updated: 03-power-supply-guide.md.

7. 40 CU Voltage Guidance

New finding: Community consensus: start at 2000 MHz @ 980 mV (vinnijs.dev). Stay below ~1130 mV / 85°C (hojnikb). Silicon lottery varies widely (960-1060 mV for 2000 MHz). Even 1800 MHz @ 40 CU is faster than 24 CU @ 2400 MHz (essdee4336).

Updated: 06-gpu-governor.md.

8. OS Fixes

New finding: CachyOS pacman uses x86_64_v3 by default — fix via Architecture line in pacman.conf (graytl). Bazzite governor issues resolved by rebasing to bazzite:stable (zerosumpr). Hibernate broken on CachyOS (kernel bug — essdee4336, pops1cl).

Updated: 05-os-installation.md, 10-troubleshooting.md.

9. Rebrand: Unofficial Guide

Repository renamed to katzzero/bc250-unofficial-community-guide. All docs updated to reflect: unofficial, made by katzzero, not endorsed by any community.

Updated: README.md, CONTRIBUTING.md, all AI protocol files.

HIGH Severity

1. VCN Status — V2 is Outdated

V2 claim: "No progress, the last person working on it disappeared."

Community data shows: Active work IS happening. Users Angablade and holde have poked the SMU to engage the VCN block and are getting partial results. The VCN block is confirmed NOT fused off.

Evidence	Source	User
"Nothing actually stopping me from poking the SMU commands directly. Because I did it. And that made the registers for the VCN stop being dead registers"	bc250-chat part 331:155	holde
"The driver did see the VCN present after I did that, but ffmpeg didn't return an expected result. I got ONE frame out of it and then ffmpeg crashed"	bc250-chat part 331:266	holde
"Anga sent me over a test script that'll poke the SMU"	bc250-chat part 331:282	holde
"SetSoftMaxVcn 0x4C, SetSoftMinVcn 0x4D" (SMU commands being tested)	bc250-chat part 323:252-253	Unnamed
"neat, my results, active VCN, partially working decode with wrong output, frame encoding probably same"	bc250-chat part 344	holde
"cyan-skillfish-governor-smu would be a good place to inject the correct commands to enable VCN"	bc250-chat part 323:440	Unnamed

Action: VCN section needs complete rewrite. Status: active research, partial decode achieved, not yet functional.

MEDIUM Severity

2. Kernel Recommendations — 6.19.x is the Current Target

V2 claim: Recommends 6.18.18 LTS as the primary kernel.

Community data shows: No mention of 6.18.18 was found across all 839 export files. The community has moved to kernel 6.19.x, which contains important VRR and DP audio fixes.

Evidence	Source	User
"All the good stuff that helps this device is already in mesa 26 and kernel 6.19"	bc250-chat part 336:277	Unnamed
"kernel 6.19 has VRR fixes"	bc250-chat part 9:317	Unnamed
"The latest testing release comes with the OGC 6.19.11 kernel. DisplayPort audio works"	bc250-chat part 329:868	gennro
"Testing 6.19 with gpu patch and mesa-git"	bc250-chat part 201:260	Unnamed
Broken kernel ranges confirmed: 6.15.0-6.15.6 and 6.17.8-6.17.10	Multiple sources	Multiple

Action: Update recommended kernel to 6.19.x. Keep 6.18 stable as fallback but note 6.19 has VRR and DP audio.

3. Mesa Version — 26 is Now Current

V2 claim: "Mesa 25.1+ minimum, 25.3.x recommended."

Community data shows: Mesa 26 is actively in use with significant performance improvements.

Evidence	Source	User
"My Bazzite-deck image from last week is running mesa 26"	bc250-chat part 351:88	Unnamed
"cachy is using the latest mesa 26 which has a lot of fixes and performance improvements in it"	bc250-chat part 350:899	Unnamed
"gains with mesa 26 were no joke. In GTAV enhanced..." (from 3-5fps with RT to smooth)	bc250-chat part 262:860	Unnamed
"We get a little more in Mesa 26 and a little from 6.19"	bc250-chat part 207:488	Unnamed
Mesa-git packages at version "26.0.0_devel.215111" available	channel-export part 6915:15-16	Chaotic AUR

Action: Update recommendation from "25.3.x" to "26.x recommended, 25.1+ minimum."

4. VRR — Multiple Paths Now Available

V2 claim: Mentions only a custom Bazzite image for VRR.

Community data shows: At least four working approaches now exist.

Evidence	Source	User
"yeah on cachyos VRR is working for me"	bc250-chat part 330:103	Unnamed
"Tested CachyOS and can confirm VRR is working with the Ugreen 8k60hz DP to HDMI 2.1 adaptor"	bc250-chat part 330:301	Unnamed
"VRR is working on the testing build for Bazzite. I use the deck build"	bc250-chat part 331:740	Unnamed
"kernel 6.19 has VRR fixes"	bc250-chat part 349:257	Unnamed
"there is a custom image of bazzite that pulls through the latest stable build but adds the AMD VRR patches"	new-export part 16:308-320	fforduck

Action: Expand VRR section to document all four approaches: (1) CachyOS native, (2) Bazzite testing branch, (3) custom Bazzite image, (4) kernel 6.19+.

LOW-MEDIUM Severity

5. Idle Power Consumption — Range Slightly High

V2 claim: "Idle with governor: 65-85W." Also previously claimed 60-70W (Discord-sourced) and referenced perfprofile down to 48W.

Community data shows: Actual consensus is 60-70W with SMU governor. The 48W claim from resources is disputed as unverified.

Evidence	Source	User
"my current idle is about 60W" (after changing SMU profile from 3 to 0)	bc250-chat part 337:418	gennro
"stock ungoverned idle is about 80W, with the GPU governor it's about 40W" (contested claim)	channel-export part 478:19	neggles
"without the patch board with proper fan will hover around 100W on idle, if you use patch, it will idle at 65W"	channel-export part 3822:26	dantistnfs
"measured at the wall with a wattmeter the lowest I've ever gotten the board to idle is like 68 watts"	channel-export part 3767:15	Unnamed
"claims of 45w are BS"	bc250-chat part 48:644	NexGen-3D
"power draw lower than 65 watts has yet to be replicated by anyone in here"	bc250-chat part 12:291	Unnamed

Action: Refine idle power to "60-70W with SMU governor" (gennro, dantistnfs). Mark sub-60W claims as disputed (NexGen-3D). Add note about SMU profile tuning (profile 0 saves ~15W over profile 3, per gennro).

6. FSP500-30AS — Missing Caveats

V2 claim: 500W, 80+ Platinum. eBay search ID provided.

Community data shows: Missing important caveats.

Evidence	Source	User
"the FSP500 only does 396w on the 12v rail" (not full 500W)	bc250-chat part 342:627	gennro
"FSP500-30AS also commonly emits coil whine when theres no load"	bc250-chat part 105:195	Unnamed
"yeah it took my FSP500 out" (killed by sustained high draw)	bc250-chat part 329:111	gennro
"I was pushing upwards up 350w through that single pcie 8 pin and never melted a wire, but killed the PSU"	bc250-chat part 342:685	gennro

Action: Add note: 12V rail is 396W (not 500W), known coil whine at no-load, can fail under sustained high draw (gennro).

LOW Severity

7. DP Audio Fix — TheFloW Attribution Missing

V2 claim: Fixed in Linux 6.19.10+. Bazzite needs custom kernel.

Community data shows: Fix was contributed by TheFloW (PS5 Linux developer). Not 100% perfect for all configs.

Evidence	Source	User
"the guy that added PS5 support to mesa... he says he also fixed displayport audio"	bc250-chat part 304:645	fanoush_
"We got working dp (and active dp hdmi adapters) audio before GTA 6 thanks to TheFloW"	bc250-chat part 292:807	Unnamed
"it's mostly fixed in newer kernels although audio desynchronization can occur"	bc250-chat part 335:656	Unnamed
"And I still have a hiccup in audio on my 4k TV approximately every 38 seconds (with the active adapter, passive works without issue)"	bc250-chat part 329:906	gennro

Action: Add attribution to TheFloW. Note that active DP-HDMI adapters may still have intermittent audio issues (gennro).

8. Sound Blaster Play! 4 — Not Community-Adopted

V2 claim: Recommends Creative Sound Blaster Play! 4, ASIN B08T9LM3LM.

Community data shows: Zero mentions of Play! 4 or that ASIN across all exports. Community standardizes on generic USB audio dongles.

Evidence	Source	User
Sabrent USB audio adapter commonly used	bc250-chat part 286:803	Unnamed
UGREEN USB Audio Adapter used	bc250-chat part 59:136	Unnamed
Apple 3.5mm dongle used	bc250-resources 1471566474446372977:334	Unnamed
"just using a usb audio dac and its fine"	bc250-chat part 53:849	Unnamed

Action: Keep Play! 4 as one option but note it's not community-verified. List commonly-used community options: Sabrent, UGREEN, Apple dongle.

9. Elden Ring — CachyOS Advantage

V2 claim: 45-51 FPS, CPU bottleneck.

Community data shows: One user reports +20% FPS on CachyOS vs Bazzite.

Evidence	Source	User
"+20% fps in Elden Ring in favour of Cachy"	bc250-chat part 350:873	Unnamed
"with pretty aggressive OCs im between 45-55ish fps 1080p mostly low settings"	bc250-chat part 265:571	Unnamed
"FPS remains the same when I lower the graphics to minimum"	bc250-chat part 265:777	Unnamed

Action: Add note about distro-specific performance (CachyOS may give +20% in CPU-bound games like Elden Ring).

10. New Game Performance Data (Not in V2)

Game	Reported FPS	Source	User
Forza Horizon 5	40-100 FPS	bc250-chat part 269:212,220	Unnamed
Stellar Blade	50-80 FPS at 1440p	bc250-chat part 351:116, part 24:659	fforduck, Unnamed
Helldivers 2	40-60 FPS	bc250-chat part 7:379	Unnamed
Valheim	40-80 FPS (mitigations=off)	bc250-chat part 87:737	Unnamed
GTA V Enhanced (RT)	Smooth on Mesa 26	bc250-chat part 262:860	Unnamed
Oblivion Remaster	30-75 FPS (3440x1440, FG)	bc250-chat part 311:156,208,270	Unnamed
RDR2	31-80 FPS across presets	bc250-chat part 340:928	Unnamed
Marvel Rivals	100-190 FPS	bc250-chat part 350:693	Unnamed
God of War 3 (RPCS3)	~42 FPS at 1080p	bc250-chat part 156:798	Unnamed

Action: Add these benchmarks to V2 game benchmarks with user attribution.

Confirmed Correct (No Change Needed)

Topic	V2 Claim	Community Confirmation
GPU max clock	2000 stock / 2230 patched	Confirmed, well-replicated
BIOS P3.00	Recommended	Confirmed by multiple users
PTM7950	Best thermal interface	Gold standard, universally recommended
Arctic P12 Pro/Max	Top fan choices	Both still community standard
IOMMU must be disabled	Confirmed	Not disputed
Mesa 25.1 minimum	Confirmed	Messaged by dozens of users
Smokeless_UMAF danger	Confirmed	Not disputed

Generated by cross-referencing V2 documentation against 839 Discord export files (bc250-chat, bc250-resources, bc250-flex-chat, benchmarks, new May 2026 exports). Each item is traced to the specific source file, line number, and community member. Items marked "Unnamed" where the Discord export format truncated the username.

Help-Thread FAQ Additions (2026-05-14)

Extracted 13 resolved FAQs from 120 help-thread exports. Added to documentation:

FAQ	Added To	Source (help-thread user)
Power on 1 sec then off (bad PSU)	10-troubleshooting.md	gredzikk
GPU hang 1-2h (VRAM overheating)	10-troubleshooting.md	gdong0921_04971, baramin
Blue artifacts (poor GPU bin)	10-troubleshooting.md	sajonsmk
Green screen (GDDR6 reball needed)	10-troubleshooting.md	jayawesome
Bazzite installer freeze (try CachyOS)	10-troubleshooting.md	.moosi
VRR + CachyOS 6.19 + UGREEN + sound	08-display-and-audio.md	steffman_
Spider-Man 2 OOM fixes	07-game-benchmarks.md	hojnikb, _nk10, zerosumpr, newgbaxl
Flash.nsh keyboard typo	02-bios-and-firmware.md	najibc
Attribution registry updated	ai/AI_PROTOCOL.md	17 new users added

AI Inference Addendum (2026-05-15)

Created 12-ai-inference.md with cross-verified data from Discord exports and internet sources:

Section	Key Claims Verified
llama.cpp Vulkan (quick start)	Pre-built vulkan zips, `-ngl 999`, `-cram`, `GGML_VK_FORCE_MAX_ALLOCATION_SIZE`
Performance benchmarks	Discord data (hammercoral, __nightfox, xseol) + llama.cpp GitHub benchmark thread #10879
ROCm status	Confirmed gfx1013 not in ROCm matrix; partial work (hammercoral, neoney)
Model compatibility	Fits Qwen-9B, Gemma-12B, MoE-30B; needs 5+ boards for 70B
Ollama limitations	~56% slower due to vendored llama.cpp b7437 (Ollama issue #15601)
Multi-board RPC	Only PP, not TP; 1GbE bottleneck (xseol data)
Stable Diffusion	stablediffusion.cpp + Vulkan confirmed; 2x vs RX 6600

Web sources used: elektricM radv.md, ROCm/TheRock SUPPORTED_GPUS.md, Phoronix (Mesa 25.1 RADV), llama.cpp issue #10879/#15601/#20934.

40 CU Unlock (2026-05-18)

Community project duggasco/bc250-40cu-unlock re-enables all 40 CUs on the BC-250 via kernel patch. Key updates:

File	Change
01-hardware-specs.md	GPU CU count: 24x CUs, up to 40 unlockable. 40 CU power data at 1500 MHz (125W) and 2 GHz (181W).
12-ai-inference.md	Full 40 CU Unlock section: 1.61x compute scaling (230→372 tok/s pp512), register mechanism, health testing, install, safety, credits.
README.md	Key Facts GPU line: "up to 40 via kernel patch"

Credits: duggasco (research, repo), filippor (independent testing), scallion_9883 (benchmarks), Claude/Codex (SPI register analysis), kilrah (disable_cu), hojnikb (harvest maps), koloses (bad CU testing), essdee4336 (thermal), big_trov (stable verify), codyrainy (build test).

40 CU Gaming Benchmarks + Mangohud Fix (2026-05-19)

Extracted from project-forums Discord channel:

File	Change
07-game-benchmarks.md	New 40 CU gaming section: Furmark 1080p/1440p (57→153 FPS scaling), Superposition scores (Medium 14004, Extreme 5759), efficiency insight (more CUs + lower clock = cooler same perf)
01-hardware-specs.md	40 CU idle power (75W vs 69W stock), efficiency insight (big_trov)
10-troubleshooting.md	New mangohud 655% GPU usage fix (hassanthejust — Python daemon intercepts gpu_metrics at 0x1C)

Credits: big_trov (40CU gaming benchmarks, idle, efficiency), essdee4336 (40CU Furmark 1080p at multiple clocks), hassanthejust (mangohud fix), hojnikb (comparison data).

Cross-Reference Verification Fixes (2026-05-25)

Full audit of 26 repos cloned and cross-referenced against documentation:

File	Change
02-bios-and-firmware.md	Removed `(need confirmation)` from MrrZed0/bc-250-bios — URL confirmed valid
05-os-installation.md	Fixed wrong script name: `Arch-setup.sh` → `install.sh` (eabarriosTGC/BC250--ARCH)
05-os-installation.md	Fixed wrong script name: `install.sh` → `oberon_install.sh` (pnbarbeito/bc250-arch)
07-game-benchmarks.md	Fixed duplicate numbering (two items labeled "8.")
10-troubleshooting.md	Fixed typo: "scooter tool" → "scooper tool"
01-hardware-specs.md	Fixed malformed sentence: "48W perfprofile tweak is" → "48W perfprofile tweak"

Additional findings (requires Discord community follow-up):

kenavru/BC-250 described as "EFI flash tool" — actually just BIOS files, no flash tool

Fred78290/nct6687d described as "PWM fan control driver" — actually lm-sensors monitoring driver

bc250-acpi-fix: doc says "C-States and P-States" but P-States don't work per README

5 repos exist but not documented: BC-250-Custom-Case, bc-250-sleeve-adapter, BC250--ARCH, bc250-arch, Magnap-cyan-skillfish-governor

Full Cross-Reference Audit Corrections (2026-05-25)

Full audit of all 14 Revised files (~3,200 lines) against 30+ elektricM docs, 27 repos, 80+ Discord exports, and RAG vector store. 10 parallel agents, 45 corrections total.

CRITICAL Corrections

File	Line	Change	Source
01-hardware-specs.md	17	GPU perf: "RX 6600" → "Stock 24 CU: Between RX 6600/6600 XT; 40 CU: RX 6700/GTX 1080 Ti"	May 2026 Discord (jpvgaster, big_trov, essdee4336)
02-bios-and-firmware.md	35	"[Forced]" → "[Forces]" — Forces is actual BIOS value, not typo	elektricM flashing.md, kenavru README
02-bios-and-firmware.md	215	Stock 24 CU temp: 83°C → 79°C	duggasco/README.md, technical-report.md
02-bios-and-firmware.md	300-301	Removed "GitHub README is incorrect" claim — it correctly documents WGP granularity	duggasco/README.md, GreatApo fork
04-cooling-guide.md	25	"Cutout variant with built-in openings" → "Thicker-fin variant, fewer thicker-gauge fins"	elektricM cooling.md
06-gpu-governor.md	360	"RedBoard" → "redbeard1083"	GitHub username confirmation
08-display-and-audio.md	101-108	Vulkan_NullVRS: fixed env var (Vulkan_NullVRS=1 → ENABLE_VK_NULLVRS_1=1) and install method	Vulkan_NullVRS README
08-display-and-audio.md	38, 58	Fixed two misattributions: gennro→essdee4336 (line 38), gennro→fforduck (line 58)	Discord exports
09-wifi-and-peripherals.md	70	Play! 4 ASIN misattribution: B06XBZ38ZJ → B08T9LM3LM (was Play! 3 ASIN)	Cross-file consistency check
10-troubleshooting.md	397-408	Split VRS vs 640x480 — were conflated as same issue	Vulkan_NullVRS README, Discord
11-community-and-resources.md	57,154	Message count aligned: 7,782→9,716	elektricM README
01-hardware-specs.md	77	Removed unverified "48W perfprofile tweak" claim	No source found in any export or repo

MEDIUM Corrections

File	Line	Change	Source
02-bios-and-firmware.md	14	_fanous_ → _fanoush_; "custom fan curve" → "standard fan control"	Discord, elektricM flashing.md
02-bios-and-firmware.md	228-231	gennro toolkit: changed to curl + correct script name	gennro/bc250-toolkit README
02-bios-and-firmware.md	112-114	Internal flash warning softened — MrrZed0 repo docs it	MrrZed0/README.md
05-os-installation.md	168-179	Nobara attribution: mothenjoyer69 → "Discord community discussion"	User not confirmed in exports
07-game-benchmarks.md	217,236	Arc Raiders: ~100→60+; Zenless: 40-50→crashes	Discord contradiction resolution
07-game-benchmarks.md	378	nexgen3d voltage: 1145→1165 mV	Discord Superposition thread screenshot
09-wifi-and-peripherals.md	13	BT version: 5.2→5.3	Amazon listing
10-troubleshooting.md	60	Added 6.19.x kernel recommendation	quick-reference.md
10-troubleshooting.md	165-203	Added note: btrfs/SELinux steps from Discord, not performance.md	Source audit
10-troubleshooting.md	246	Added (need confirmation) to sajonsmk claim	User not found in exports
11-community-and-resources.md	25	ACPI fix: "C-States and P-States" → "C-States (P-States experimental)"	bc250-acpi-fix README
README.md	52	ACPI fix warning: added P-State caveat	bc250-acpi-fix README
04-cooling-guide.md	59	Router quote: removed (need confirmation), attributed to snodrat	bc250-flex-chat export
README.md	48 (new)	Added 6-pin to 8-pin fire hazard warning	Discord confirmation

LOW Corrections

File	Line	Change
05-os-installation.md	67	Removed (need confirmation) from bazzite password
05-os-installation.md	251	Fixed leading space before chmod
06-gpu-governor.md	39	Removed (need confirmation: Manjaro) — confirmed by elektricM docs
06-gpu-governor.md	233	Added P-State nuance note (repo says not working, Discord says works)
07-game-benchmarks.md	30,46,59,60,85,184,233,283	8 (need confirmation) → (Discord user) with confirmed source
07-game-benchmarks.md	59	2230 MHz crash and 10/6 VRAM fixes confirmed
10-troubleshooting.md	151	MESA_LOADER_DRIVER_OVERRIDE source: "not in source docs" → "Discord bc250-chat"
10-troubleshooting.md	105,111,121	3 (need confirmation) tags removed — Discord sources found
10-troubleshooting.md	452-453	2 (need confirmation) tags removed — Discord sources found
04-cooling-guide.md	110	Removed (need confirmation) from screw warning — elektricM confirmed

Still Unresolved

~60+ (need confirmation) tags remain without source (concentrated in 07-game-benchmarks.md and 11-community-and-resources.md)

6+ Printables URLs return transport errors (confirmed still failing as of June 14, 2026)

~~5 repos not yet documented~~ ✅ Resolved — added to 11-community-and-resources.md

Cross-Reference Verification Protocol

Created ai/AI_VERIFICATION_PROTOCOL.md — standardized multi-layer verification process for future audits.

Protocol features:

Source hierarchy with "newest wins" rule

3-layer verification (RAG, parallel agents, cross-file)

Finding classification (severity + type taxonomy)

Full 5-step workflow: Discovery → Analysis → Plan → Execution → Validation

Standardized report format for machine-parsable output

Quality assurance gates with pass criteria

Agent handoff protocol for interrupted cycles

Created by: Claude (Anthropic) via opencode on 2026-05-25

New Discord Exports Audit (2026-05-25)

Reviewed 45 new bc250-chat exports (after May 20, 2026). Key findings added:

File	Change
06-gpu-governor.md	Added governor v0.4.0 CPU-based memory clock control; idle power testing (big_trov/pops1cl); min freq 500 MHz default; SMU-plus pprofile autoswitching
07-game-benchmarks.md	dznuts 5300 Superposition 38CU/2200MHz; Death Stranding 2 36CU@1440p+FG=60; S.T.A.L.K.E.R. 2 stock/36CU/FG benchmarks; Subnautica 2; PICO upscaler; memory OC gains minimal
02-bios-and-firmware.md	PS5 40CU patch confirmed (gennro); OCP secondary power limit at 1850-2200MHz; CPU core unlock research update
04-cooling-guide.md	Thermalright Peerless Assassin 120 + 3D bracket + GPU backplate cooler
01-hardware-specs.md	Idle power identical regardless of CU count (big_trov); 64W downclocked idle (pops1cl)
README.md	Latest additions section updated

Full Guild Export + RAG Rebuild + Audit (2026-05-25)

Exported all guild channels and threads after 2026-05-20 (105 new files). Rebuilt RAG index (69,591 → 72,355 chunks). Ran full audit cycle per AI_VERIFICATION_PROTOCOL:

Layer	Action	Result
A	RAG queries on all key claims	Most claims score ≥0.70-0.85 — well-supported
B	Cross-reference new exports vs docs	40CU data, governor, OCP already covered
C	Cross-file consistency	Fixed duplicate numbering in README warnings

Corrections applied:

README.md: Removed (need confirmation) from FSP500-30AS eBay ID 389522369783 — confirmed by essdee4336 (May 23, 2026)

README.md: Fixed duplicate "8." numbering in Important Warnings (was 8, 8, 9 → 8, 9, 10)

ai/rag_query.py: Unified with RAG/rag_query.py (fixed ChromaDB path, added Discord chunk merging, noise filtering, Ollama error handling, stats sampling)

New exports reviewed: 105 files from bc250-chat, bc250-flex-chat, bc250-resources, benchmarks, help-thread, project-forums (after 2026-05-20). Key topics: big_trov 40CU efficiency data, SMU Plus troubleshooting, CPU core unlock research (scallion_9883), new Superposition/Furmark scores. All existing docs already reflect these findings.