6310i ver 5.22 unlock problem ... pls help ...

hello all,

I have a 6310i ver 5.22 ... I get the right codes for unlocking the phone but when I try the codes I get the mesage : CODE ERROR OR CAN NOT UNDO RESTRICTION ...
after many tryes I downgraded the phone to ver 5.10 and try to unlock by cable with 3 diferent software ... but always get the mesage ... SPLOCK REBBUILD FAILD ... can some one help me to unlock this phone pls ?!
thx best regards, alianu.

u must downgrade to 4.80 to be able to unlock it with cheap flasher

after downgrade u may upgrade again to 5.22

but use only patched mcu's to avoit loosing bluetooth funcions