The is the standard utility for repairing or restoring IMEI numbers on devices using the SC7715 chipset. It is primarily used to fix "Invalid IMEI" or "Null IMEI" issues that occur after flashing a new ROM or performing a factory reset. Tool Review & Features

If you want, I can:

Utilizes the "SPRD U2S DIAG" port in Device Manager for the repair process. Proper Review & Performance

Supports writing IMEI to both Single SIM and Dual SIM devices (IMEI1 and IMEI2).