: The device must be rooted . You can find tested root files on community forums like XDA Developers .
: Modern auto-patch files are designed to keep the network active even after a factory reset. g532f auto patch file
For many Samsung devices using MediaTek chipsets like the G532F, simply repairing the IMEI is not enough. The device requires a "Patch Certificate" operation to authorize the IMEI on the network. : The device must be rooted
Once the process finishes, the phone will reboot. Wait a few minutes for the signal bars to appear. You can check the certificate status by dialing *#0011# ; it should show or NG (if it failed). Where to Find the Files g532f auto patch file