Google Pixel 4a

Overview

codename sunfish	🥩	🥦
Flavor (?):	Pro	Slim
Android:	13	13
First released:	2024-01-16	2025-02-05
Firmware:	included	included
Encryption (?):	FBEv1	FBEv1
Relockable:	yes	yes
VerifiedBoot/AVB (?):	v2.0	v2.0
Verified & tested by:	The AXP.OS team	The AXP.OS community
State:	stable	stable

Installation guide

You want to switch between flavors or coming from DivestOS?

Please read this first: All about AXP.OS flavors If you miss a flavor you can request it here.

Known issues

• General Known Issues

• Issue tracker won’t fix

Boot modes

Each device has its own method to access special boot modes.
See: sunfish (@LineageOS wiki)

Firmware

AXP.OS for the Google Pixel 4a includes the latest available bootloader and modem firmware.
No manual firmware flashing needed if you follow the Install guide.

Install / Upgrade

Install (Pixel devices)

Setup AXP.OS

Follow Setup

Re-locking the bootloader

Follow Bootloader-Lock

Fingerprint information

On boot you may see a fingerprint/ID verifying AVB trust.
Some devices show only 8 chars, others full digest.
See more details here.

This fingerprint is unique per device and flavor.

If you see a different ID, immediately request support.

Pro build

BOOTLOADER minimal ID
      2357DB9E

BOOTLOADER full ID:
      2357DB9EBF8090F9
      908E9BBC0B353CC9
      CA11015AC588001D
      0AB9A80BD8AA5906

Slim build

BOOTLOADER minimal ID
        B49112D3

BOOTLOADER full ID:
        B49112D3DD534A21
        AD3FC088B8977377
        4004899D7B181996
        15E6F074099EA3E0

XDA thread

See here

Debugging

DEVICE-BOOT-DEBUG-PATH: /mnt/vendor/persist
See Logs

Download

💡 The hashsum of new builds are also send in the sfX Automation channel. This gives you a second and independent option for comparison if the download server is compromised.