i want to share a great module for the Xposed framework.
It disables the annoying Datatraffic enabled/disabled message.
Works fine on my XSP with firmware .245 (C5303) not deodexed.
Forum Link: http://forum.xda-developers.com/showt...
I had a similar issue and after 4 days of trying all what i could find out in XDA for bricked Xperia phones my SP is back alive.
For me it happened during flashing (with Flashtool 0.9.11) the stock firmware .257 with to less battery power.
Nova Launcher Prime
Materialistik Icon Pack
Background from here http://creativecrunk.com/material-design-backgrounds/
I had the Same Problem.
Did you close Android Auto Auto ("Beenden") on your mobile phone before you launched the desktop head unit?
For me it solved the issue.
Grüße aus Bayern