How to upgrade Fairphone 2 to LineageOS 17.1 (Android 10)

I bought a Fairphone 2 few years ago, and directly installed Fairphone Open. The main reason is I didn't want to be polluted by the Google echosystem. I know that Fairphone Open is based on Android but it does not have Google services pre-installed and it is full open source.

Years has passed and it seems that Fairphone doesn't really support it anymore. Updates comes to be more than rare (stuck with Android 7), another sign is that it's not even available on Fairphone 3 phones... So as I didn't have the intention to replace it I decided to install LineageOS in order to be up to date. (security and applications compatibility).

We will see how to process.

Backup your data

First you have to know that every datas will be erased so it's a good thing to make a backup.

I've used this two softwares to backup my datas.

SMS Backup & Restore

Android SMS Backup and Restore Logo

Super Backup

Android Super Backup Logo

Manual Backup

Off course I've manually saved my own pictures and videos.

Download Tools

Download adb tools, to your Download folder, unzip and open a Windows Command Prompt. Go inside the unzipped folder.

C:\>cd %HOMEPATH%\Downloads\platform-tools_r30.0.3-windows\platform-tools

For GNU/Linux, here with Debian :

user@host:~$ sudo apt-get update && sudo apt-get install android-tools-adb android-tools-fastboot

Enable USB debugging

C:\Users\std\Downloads\platform-tools_r30.0.3-windows\platform-tools>adb devices
* daemon not running; starting now at tcp:5037
* daemon started successfully
List of devices attached
f9f7d41f        device

Download and Install TWRP (Custom Recovery)

In order to install LineageOS we need to replace the default recovery by TWRP.

Download latest TWRP for fairphone 2

adb reboot bootloader
fastboot devices
fastboot flash recovery twrp-x.x.x-x-FP2.img
fastboot reboot

Download and Install LineageOS (Android 10)

Download latest build for FP2 here.

Optionally, if needed (I personnaly don't), you can download Google apps here.

adb reboot recovery
TWRP Unmodified System Partition TWRP Wipe TWRP Format Data TWRP Advanced Wipe TWRP System Cache Advanced Wipe TWRP Advanced TWRP ADB Sideload TWRP Swipe to Start Sideload
adb sideload lineage-17.1-xxxxxxxx-nightly-FP2-signed.zip
adb sideload open_gapps-arm64-10.0-xxxx-xxxxxxxx.zip
adb reboot

References

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