You should only restore the original IMEI found on the sticker under the battery or on the device's box. Step-by-Step Process Prepare the Phone: Settings > About Device Build Number 7 times to enable Developer Options. Developer Options USB Debugging OEM Unlock Connect the phone to your PC via a high-quality USB cable. Setup Z3X Software: Samsung Tool Pro Select the model from the model list. tab and perform a backup of your Do not skip this—it is your safety net. Repairing the IMEI: Enter the original number in the IMEI field.
Changing, modifying, or repairing an IMEI number is illegal in many jurisdictions if done to mask a stolen device or facilitate fraud. This guide is intended strictly for: j510f imei repair z3x
After the IMEI is repaired, you might see "Emergency Calls Only" or no signal. In the Z3X software, go back to the tab and click Patch Certificate You should only restore the original IMEI found