can't flash comma four

## Bug Report - flash.comma.ai

**Device:** comma four
**Serial:** N/A
**Error:** LOST_CONNECTION
**Step:** CONNECTING
**Last Message:** N/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/144.0.0.0 Safari/537.36
**URL:** https://flash.comma.ai/
**Time:** 2026-02-13T03:44:44.125Z

Console Logs

```
[2026-02-13T03:43:20.752Z] [info] flash.comma.ai version: 7e56d5f
[2026-02-13T03:43:20.789Z] [info] [ImageManager] Initialized
[2026-02-13T03:43:31.804Z] [error] [Flash] Connection error {}
[2026-02-13T03:43:31.805Z] [debug] [Flash] error 4
```

No repository file or test is named. Start by reproducing the comma four flash flow at flash.comma.ai on Windows 10/11 and inspect the browser console, especially the [Flash] Connection error and error 4 entries. Done means the device can proceed past CONNECTING without a LOST_CONNECTION failure.

Written by the indexing model from the issue text.