Spreadtrum IMEI Tool V4.1 is a lightweight Windows utility designed to write, repair, or restore IMEI numbers on smartphones powered by Spreadtrum (now Unisoc) processors. It is especially useful for devices that have lost their IMEI after flashing, factory reset, or firmware corruption.
: The computer lacks the correct drivers. Open Windows Device Manager, connect the phone, and check for any yellow exclamation marks. Reinstall the SPD diagnostic drivers manually. Try switching from a USB 3.0 port to a USB 2.0 port. Write Fail / Error Response Spreadtrum Imei Tool V4.1
If the tool fails to detect the phone, it is almost always a driver issue. Reinstall the SPD drivers and restart the PC. Conclusion Spreadtrum IMEI Tool V4
Every mobile phone has a unique 15-digit code called an IMEI. If this code gets erased, your phone will show errors like "Null IMEI" or "Invalid IMEI". You will also lose your cell signal completely. Open Windows Device Manager, connect the phone, and
Enter the 15-digit IMEI numbers found on your device's original sticker or packaging. : Power off your phone.
: Works with various Spreadtrum/Unisoc configurations, including SC, SL, and Tiger series.