I know there are much threads about this, but not for this phone.
I have the Handy Sony Xperia V.
The Bootloader got locked by my provider called 3 (Austrian Provider).
I tel. them and they sayd that i should speak with sony about this problem, but sony has nothing to do with that.
The service of 3 is useless.
I could buy the telephone free from the provider for 110€ but thats to much.
In my system it says: Bootlocker unlock: Not Allowed.
I have tried so many opinions, but non worked.
I hope you can help me!
PS: Im going to load Cyanogenmod Stable/Nightly