i have xuz c6833 14.2.A.1.136 - rooted.
i read and followed all steps from here: http://forum.xda-developers.com/show....php?t=2447319 untill:
11. In the cmd windows type in fastboot.exe -i 0x0fce getvar version
12. If a value is returned (it will return 0.5), it means the phone is correctly connected
13. Type in fastboot.exe -i 0x0fce oem unlock 0xKEY and replace KEY with the key which u received earlier. (replaced KEY)
then it says:
FAILED (remote : Device already rooted)
i have tried Xperia Z Ultra Toolkit 1.0 and got the same message FAILED after enter unlock code received earlier via email from sony.
plds show me where i did wrong? thank you.