Grant on the phone screen when the prompt appears. 3. The Repair Process
Even after a successful repair, the device will likely show "No Service" because the new IMEI is not yet "certified" by the firmware.
Go to Settings > About Phone > Software Information and tap "Build Number" seven times.
For Binary 8 (U8) devices, rooting is mandatory for the "Repair" and "Patch Certificate" functions.
Click the Repair button. The tool will communicate with the phone, bypass security, and rewrite the IMEI. The device will reboot automatically during this phase. 4. Patching the Certificate (Network Fix)
Navigate to the Repair tab. Enter the original 15-digit IMEI number found on the device's back cover or original box into the "IMEI" field.
Stock Android 8.0 Oreo (Binary 8/U8) firmware, such as version G930FXXS8ETC3 . Step-by-Step IMEI Repair Guide 1. Prepare the Device
Go to the "Backup" tab and click Read EFS . This is a critical safety step to prevent permanent baseband loss.