HELP

## Bug Report - flash.comma.ai

**Device:** comma four
**Serial:** 17dd44ec
**Error:** FLASH_SYSTEM_FAILED
**Step:** FLASH_SYSTEM
**Last Message:** Flashing system_a

**OS:** Windows 10/11
**Sandbox:** None detected
**Browser:** Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Safari/537.36
**URL:** https://flash.comma.ai/?windows=1
**Time:** 2026-07-20T20:13:55.984Z

Console Logs

```
[2026-07-20T20:01:58.705Z] [info] [Flash] Downloading splash
[2026-07-20T20:01:58.707Z] [debug] [ImageManager] Downloading splash from https://commadist.azureedge.net/agnosupdate/splash-5c61260048f22ede6e6343fabb27f6ff73f9271f4751a01aaf7abf097afc1f08.img.xz
[2026-07-20T20:01:59.041Z] [info] [Flash] Flashing splash
[2026-07-20T20:01:59.075Z] [info] [qdl] Flashing splash
[2026-07-20T20:02:00.122Z] [info] [Flash] Downloading storsec
[2026-07-20T20:02:00.123Z] [debug] [ImageManager] Downloading storsec from https://commadist.azureedge.net/agnosupdate/storsec-4494d86f68b125fbf2c004c824b1c6dbe71e61a65d2a1cc7db13c553edcb3fce.img.xz
[2026-07-20T20:02:00.128Z] [info] [Flash] Flashing storsec_a
[2026-07-20T20:02:00.162Z] [info] [qdl] Flashing storsec_a
[2026-07-20T20:02:00.168Z] [info] [Flash] Flashing storsec_b
[2026-07-20T20:02:00.202Z] [info] [qdl] Flashing storsec_b
[2026-07-20T20:02:00.209Z] [info] [Flash] Downloading tz
[2026-07-20T20:02:00.210Z] [debug] [ImageManager] Downloading tz from https://commadist.azureedge.net/agnosupdate/tz-e9443bf187641661bfa6c96702b9ab0156e72fb7482500f8799ba9ee2503cb16.img.xz
[2026-07-20T20:02:00.253Z] [info] [Flash] Flashing tz_a
[2026-07-20T20:02:00.296Z] [info] [qdl] Flashing tz_a
[2026-07-20T20:02:00.367Z] [info] [Flash] Flashing tz_b
[2026-07-20T20:02:00.401Z] [info] [qdl] Flashing tz_b
[2026-07-20T20:02:00.475Z] [info] [Flash] Downloading boot
[2026-07-20T20:02:00.476Z] [debug] [ImageManager] Downloading boot from https://commadist.azureedge.net/agnosupdate/boot-8806802b195a5b1396a3ae8dd92a8b7711dc522f6aceafd820e871bae5c8a6d8.img.xz
[2026-07-20T20:02:00.748Z] [info] [Flash] Flashing boot_a
[2026-07-20T20:02:00.783Z] [info] [qdl] Flashing boot_a
[2026-07-20T20:02:01.325Z] [info] [Flash] Flashing boot_b
[2026-07-20T20:02:01.358Z] [info] [qdl] Flashing boot_b
[2026-07-20T20:02:01.908Z] [info] [Flash] Downloading system
[2026-07-20T20:02:01.910Z] [debug] [ImageManager] Downloading system from https://commadist.azureedge.net/agnosupdate/system-ef0d879302cb29e72110e9c8d3f947c830fd7d37c8192744fc9dbea1af78501f.img.xz
[2026-07-20T20:03:29.830Z] [info] [Flash] Flashing system_a
[2026-07-20T20:03:29.861Z] [info] [qdl] Flashing system_a
[2026-07-20T20:04:37.588Z] [error] [Flash] An error occurred while flashing system
[2026-07-20T20:04:37.588Z] [error] {}
[2026-07-20T20:04:37.589Z] [debug] [Flash] error 7
[2026-07-20T20:04:37.589Z] [info] Flashed system in 179.54s
```

Start at flash.comma.ai's FLASH_SYSTEM step and trace the qdl invocation for system_a, using the supplied Windows 10/11 console log as the reproduction record. Confirm the failure path associated with qdl error 7 and document a reproducible cause and verification outcome; the issue is done when system_a flashes successfully or the failure is clearly diagnosed.

Written by the indexing model from the issue text.