try to fix base band and imei null with this firmware GT-i9500 fix_imei_null.tar u search and download
but i still now luck to repair imei
here what i do
if i do reset efs and disable test mode i will lose the base band and imei became null
if i repair imei with spt then there is no network or show yellow screen but hte imei is fixed and u cant make call its unregistered on network |