Help Fix Sony Xperia C c2305 MT6589 Dead boot

[Cleopatra]

Hi madboy46 !

Do you have already tried Sony Update Tool ?
If you haven't already tried it ... download it here :

[Only registered and activated users can see links Click here to register]

Try to flash the firmware with this tool.
STEPS :
1) remove back cover and connect your device with pc via usb cable.
2) press and hold down the OFF button using a pen (the device will turn off automatically).
3) your device will reboot and connect in charging mode.
4) remove usb cable so your phone will turn off.
5) open Sony Update Tool.
6) connect your device and flash with this tool.

Don't forget to update to NET Framework 4.6 RC (on Windows 7).
Instead, on Windows 8 you will to have to extract XperiFirm.exe.config with XperiFirm.exe

:-)