Thanks @z3ntu for ROM 4.4.4, it’s wonderful to have the Fairphone updated!
Thanks @urs_lesse for the tutorial
Version 0.0.2 works perfect for me.
I had problems with version 0.0.3-pre5 when playing mp3 (with Pulsar, Vanilla, and other sound APPs), and when making Signal voice calls, the APP crashes. But version 0.0.2 works perfect.
In case it helps someone, I could not do tethering and I solved it by installing an APK I found in this forum: https://www.htcmania.com/showthread.php?t=1005116 (It needs BusyBox installed)
I have also noticed that the remaining battery life indicator gets stuck and gives problems when I turn on the FP1 after being off for a long time (with both 0.0.2 and 0.0.3-pre5). The solution is that the FP1 is always on (turn it off a short time or never turn it off)
Thank you again.