The Spreadtrum IMEI Tool v4.1 represents a leap forward from its predecessors. Previous versions often struggled with newer security protocols implemented by Spreadtrum in recent chipsets, such as the SC77xx and SC98xx series. The "new" v4.1 addresses these limitations through several key enhancements.
A: Yes, partially. The "v41 New" update includes preliminary support. However, very new Tiger chips may require the dedicated "Tiger IMEI Tool."
The (also known as the SPD WriteIMEI Tool) is a specialized Windows utility designed for writing or repairing IMEI numbers on devices powered by Spreadtrum/UNISOC chipsets. It is widely used for fixing "Invalid IMEI" or "No Service" issues that occur after firmware flashing or hardware repairs. Core Features & Capabilities
Go to and select the correct COM port (this appears after connecting the device). Input IMEI Data : Enter the valid IMEI numbers into the provided fields.