Hold the or Volume Up key (depending on the OEM boot rules).
Always perform a complete backup of your device's NVRAM/NVDATA before writing new data. Summary of Alternatives
Ensure you are using the exact, original IMEI for your specific device. Check that your NVRAM/NVDATA partitions are not physically damaged. write imei r1.5.6.1
Yes. Any use of third-party service tools voids the manufacturer’s warranty. However, if your phone is already out of warranty or has been water-damaged, this is a common repair step.
to at least 50% battery to prevent shutdown during the process. Hold the or Volume Up key (depending on the OEM boot rules)
Click the "Write" or "Start" button in the tool.
: Install the Spreadtrum USB Drivers to ensure your PC recognizes the phone in diagnostic mode. Check that your NVRAM/NVDATA partitions are not physically
Locate the 15-digit IMEI number on the sticker beneath the device battery or on the original packaging. Input the string into the field.