I’m sorry to hear that you’re having so much trouble with your FP2. Your problem might be related to this one:
A few weeks ago my FP2 suddenly stopped working. I was using the google maps app when it suddenly turned off. I turned it back on, but after a few seconds of the restart screen and a short vibration it went black again, then did the same over and over. I have tried removing the battery and sim card and let it rest for a day, and the same thing happens. I also tried to let it keep doing the rebooting loop for a long time with nothing more happening. I also tried a hard reset, but can’t even reach…
If you can still boot into recovery mode, you might be able to recover your data using ADB, even though I have never tried that myself, but there seems to be a tool to do that:
http://forum.xda-developers.com/showthread.php?t=2339530
If you can live without the data recovery, you can try to flash the operating system image to your phone as described here:
https://fairphone.zendesk.com/hc/en-us/articles/207914363-Manually-install-Fairphone-OS-for-the-Fairphone-2
Chapters no. 2 or 3 if you can still boot into recovery mode, chapter no. 4 if you can’t…