Google Pixel 4a

Overview

Codename:	sunfish
Android:	13
Flavors:	Pro, Slim
First released:	2024-01-16
Firmware:	included
Encryption:	FBEv1
Relockable:	yes
VerifiedBoot:	yes
Verified & tested by:	The AXP.OS team
State:	stable

Installation guide

You want to switch between flavors or coming from DivestOS?

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 its special boot modes, see:

Firmware

AXP.OS for the Google Pixel 4a includes the latest available bootloader and modem firmware so there is no need to do anything but flashing AXP.OS - at least if you carefully follow the Install guide in the next topic.

Install / Upgrade

Install (Pixel devices)

Setup AXP.OS

Follow Setup

Re-locking the bootloader

Supported: yes

Follow Bootloader-Lock to lock your device.

Fingerprint information

On boot you might (some devices do not show it) see a fingerprint or "ID" which ensures the AVB signing key used is trusted.

Some devices print a minimal ID of 8 chars, while others print the whole digest. For more details and example pictures see here.

This fingerprint is unique for each device and flavor(!) but won't change during updates (at least not without a notice).

Here are both ones for sunfish.

If you see a different ID during boot you should immediately request support and stop using the device!

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)

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