AXP-Resurection/docs/002-lab-stock-rescue.md

LAB stock factory rescue — Pixel 4a (sunfish)

Scope: LAB only. Never use these steps on GOLDEN.

Source (measured 2026-09-13)

Google’s public factory listing for sunfish is pruned. The former CDN URL now returns HTTP 404:

https://dl.google.com/dl/android/aosp/sunfish-tq3a.230805.001.s1-factory-82902ea9.zip

Canonical build identity (final Android 13 / TQ3A, widely cross-checked):

Field	Value
Build	TQ3A.230805.001.S1
File	sunfish-tq3a.230805.001.s1-factory-82902ea9.zip
Size	2276267484 bytes
SHA-256	82902ea98c80f1a22706279a30d2bc46aa55cbe60703c9a02ba043bd052c6d99
Primary index	https://developers.google.com/android/images (sunfish may be empty)
Fallback (measured)	Internet Archive item sunfish-tq3a.230805.001.s1
Cross-check	CalyxOS vars/sunfish cites the same URL/hash historically

Host storage: /srv/rom/references/axp/lab/
Download log: /srv/rom/references/axp/logs/lab-factory-download.txt

Before flashing

1. Confirm the USB phone is LAB (serial/label) — not GOLDEN.
2. Backup anything you care about on LAB (full wipe).
3. Unlock bootloader only if required and already accepted for LAB.
4. Verify zip SHA-256 before flash-all.

sha256sum -c <<<'82902ea98c80f1a22706279a30d2bc46aa55cbe60703c9a02ba043bd052c6d99  sunfish-tq3a.230805.001.s1-factory-82902ea9.zip'

Flash (factory package)

From an unpacked factory directory on the laptop (USB to LAB):

# device in fastboot; verify serial matches LAB
fastboot devices
cd /path/to/sunfish-tq3a.230805.001.s1
./flash-all.sh   # Linux; erases userdata

Windows: flash-all.bat.
-w is typically included in Google’s script (data wipe).

Alternative: https://flash.android.com only if that build remains selectable (LAB only).

After flash

• Confirm LAB boots stock.
• Re-unlock / re-setup only as needed for later 003 LOS experiments.
• Do not relock unless you intend stock-only LAB.

Gate

FR-002 / SC-002: this doc + SHA-256-verified zip on host are required before experimental 003 flashes on LAB.