i can help you just download an firmware Samsung Updates Latest Firmware - LIVE! <-here and extract file then open odin file then click on PDA chose file with .tar . Turn your phone on download manager hold Volume down , power off and home button then volume up then click start on odin :)
I WAS root my phone but it fail when it rooting then a fix it but now my phone lose imei when i call *#06# it's not my real imei which is write behind battery but 004999010640000 . how can i fix it ? i have galasy s4 gt-i9500 ? PLEASE HELP ME