Can i unlock my phone???

[Doomed]

I'm not to sure, but you could replace the efs folder with the one you backed up and see if that works

[sahaya]

you can unlock your phone through codes, its the best and easy way to unlock your phone. i unlocked my phone through codes. i got the codes from this site. http://www.mobileunlocksolutions.com/ its very easy and faster. i got the instructions from this site http://www.mobileunlockguide.com/ to unlock your phone.

[anbinal]

I tried to flash firmware to I900XXJPU and its failed
Now when i start it the galaxy logo comes up then it goes black screen and it constantly vibrates

I can go into downloader mode

My phone is 8gb locked to uk orange

It says sim lock must be off before flashing

Have you tried anyone of the unlock code for your mobile.You can easily unlock your mobile using unlock code.If you need unlock code visit mobile-unlocker.com