hey,
yesterday i upgraded my firmware from v300 to v500.21.009 and everything worked fine. but then i noticed that the mobile won't connect to the wifi hotspots and the gps also doesn't work (no gps/satelites found).
i did a soft and both hard resets. nothing changed.
2 hours ago i installed the new firmware again, but this time without the backup restore. but it changed nothing again.
please help me. i don't know what to do.