I flashed the fxz gpe(after flashing the official first) a few weeks ago on my daughter's phone. It worked well until one night she said there were issues. It would not stop force closing just about every app. I did not have a custom recovery on it at that time. I have since attempted to rsd the gpe, the official fxz, a custom recovery. I have used fastboot commands to attempt to wipe userdata etc. All of these say successful, but it reboots back to the broken gpe each time. When I try to use adb shell to mount system it tells me permission denied. Note, this phone is being used as a media and game device, so no sim card and is in airplane mode with wifi on generally. Any ideas guys?