I have had big problems after trying to apply the last update to Fairphone Open OS 18.10.
My phone will not boot up successfully but, instead, displays the TWRP recovery screen. I have tried to apply a factory reset several times using TWRP but the same thing happens.
The problem started when I attempted to install the new upgrade to android 18.10. I was using the previous version of Fairphone Open OS. Before applying the upgrade I made a system backup using TWRP. I was proud of myself for playing safe and not letting my excitement to see the new update overrule my caution - actually it turns out this was probably a big mistake :0(
After installing the upgrade opengapps was not installed so I followed the instructions posted on the forum by others with the same problem [Can't install open gapps on 18.10.0 (FP open)]. These suggested installing the TWRP app and using it to upgrade to the latest TWRP, then installing Opengapps. I did this but still had no success. Many of my apps were not functioning and my phone kept overheating. As I really needed to have access to my phone I decided to use my TWRP backup to return the phone to its previous state. When I attempted to use TWRP recovery to revert to my backup I recieved an error message that the recovery had been unsuccessful with error code 255. I tried again with the same result. When I attempted to restart the phone it could not get further than the TWRP recovery screen. It was at this point that I tried the factory reset with no success.
Please can anyone advise me on what to do next? I’ve run out of options and, of course, life is suddenly very complicated without a functioning phone.