okay guys here's the catch i have to send my phone to service but i've upgraded jb 4.3 manually ( downloaded the ftf i feel they wont acknowledge my warranty now tthe custumization is changet my SI 1274-0336.3 how can i say which customization was in 4.1.2 so i can fix this thing. current custumization ( also active ) is 1272-3352_R1b, also my friend has a XSP and his custumization is 1273-8833_R1b (4.3) and we bought the phones at same time and place.
p.s. my phone is not rooted and the bootloader is unlocked also it'a an unbranded phone
any help will be greatly appreciated
