Fairphone 4

Overview

Codename:	FP4
Android:	13
Flavors:	Slim
First released:	not released yet, see #40
Firmware:	included
Encryption:	FBEv2
Relockable:	yes
VerifiedBoot:	yes
Verified & tested by:	The AXP.OS community
State:	!! ALPHA !!

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
  • Specific for FP4
• 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 Fairphone 4 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 (A/B)

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 FP4.

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

Slim build

BOOTLOADER minimal ID
        272DE007

BOOTLOADER full ID:
        272DE00712A447F3
        4AC484EB5E9A1A28
        3217A7174855F2EE
        1A4E16C591592826

XDA thread

see here

Debugging

DEVICE-BOOT-DEBUG-PATH: /metadata (see Logs)

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