QCn files SM-J500G
cert = need root to write
Qcn = no need root to wirite
Qcn = torepair network problem With 3G or 4G
Cert = To repair imei serial
you can use cert or Qcn file
z3x / octoplus / Bst
Qcn = no need root to wirite
Qcn = torepair network problem With 3G or 4G
Cert = To repair imei serial
you can use cert or Qcn file
z3x / octoplus / Bst
Spoiler :
