Thanks everyone who provided support. I have finally managed to restore e/OS/ onto my Fairphone 2 running Android 10.
I realised eventually that the phone had defaulted back to Android recovery, overwriting twrp, so I needed to reinstall twrp. Steps were as follows:
- Restart phone by holding down power and volume up key.
- Re-install twrp (I used version 3.2.3-0-FP2) using the instructions here.
- Installed /e/OS/ for Fairphone 2 using the instructions here (see section 3).
- Note – I needed to install this file: e-2.1-r-20240606407290-dev-FP2.zip not the file with the same file name prefixed by IMG.
I wasn’t able to backup my old settings using twrp to an SD card as my FP2 isn’t reading the SD card slot (a problem for another post), but otherwise everything else worked out fine from following the above instructions.
I wasted a lot of time trying to work out how to use Git Bash, or how to convert Unix commands into Windows equivalents (short version – you can’t). I’m sure these are great instructions if using Linux or familiar with Git Bash or similar Unix emulators, but didn’t work for me with Windows.