How to change imei 00| 0 in I337 AT@T phone I337UCUEMK2 4.3???

i try to change imei in I337 AT@T phone I337UCUEMK2 4.3

but always Operation failed

I root the phone

i unlock the phone

but someone play with imei and now i cant change imei

any help

very urgjent

thx

Attached Images

i337 imei 000.png (88.1 KB)

via Welcome to gsm-tips http://forum.gsmhosting.com/vbb/f286/how-change-imei-00-0-i337-t-phone-i337ucuemk2-4-3-a-1760410/