Imei Tool V4.1 ((install)) — Spreadtrum

If you own a smartphone equipped with a Spreadtrum (now Unisoc) chipset, you may have encountered the frustrating message “Invalid IMEI” or “IMEI Null.” These errors mean your phone cannot connect to any cellular network, turning it into little more than a Wi-Fi-only tablet. The Spreadtrum IMEI Tool V4.1 is a utility designed specifically to address this problem, allowing technicians and advanced users to repair or write IMEI numbers back onto Spreadtrum devices.

Sometimes, entering deep engineering modes ( # #3646633# # ) and resetting the NVRAM accidentally deletes the IMEI. V4.1 is the only low-level fix before resorting to a full re-flash. Spreadtrum Imei Tool V4.1

This is caused by missing or corrupt drivers. Open Windows Device Manager, check for yellow exclamation marks under "Ports (COM & LPT)", and reinstall the Spreadtrum standard diagnostic drivers. If you own a smartphone equipped with a

: Install the necessary SPD/UNISOC USB drivers on your PC to ensure the device is recognized in "SPD U2S" or "COM Port" mode. : Install the necessary SPD/UNISOC USB drivers on

Runs as a portable executable without requiring heavy installation packages. System Requirements