fresh install ?
Yes friend, 2 times.
Guys I don't know if this was asked before but, How can I change the Signal and wifi icons back to stock?
you have that on 1º post... Q and A...
Q: How can I have stock Sony's icons for Signal, Wifi, Battery and Stamina?
A: Go in system/ven...
It randomly worked, not sure how or why. But at least it's sorted
You can unistall all drivers USB from your PC, and if you use Windows 8 8.1 or 10, restart in "disable driver signature enforcement" and install flashtools and Xperia z2 drivers....