i9500 imei null after reset

hello



need to repair imei

mt65xx android phone



bb chip : mt6577

modem ver : maui.11amd.w11.50.sp.v19.

android ver 4.2.2

sw ver : alps.ics2.mp.v1.20

via Welcome to gsm-tips http://forum.gsmhosting.com/vbb/f781/i9500-imei-null-after-reset-1747713/