The , also commonly known as the WriteIMEI tool , is a specialized utility used primarily to repair or rewrite the International Mobile Equipment Identity (IMEI) on devices powered by Spreadtrum/UNISOC chipsets.
| Feature | v36 (Legacy) | v40 (Buggy) | | | :--- | :--- | :--- | :--- | | Unisoc Tiger Support | No | Partial (crashes on T606) | Full | | Windows 11 Driver | Requires Test Mode | Requires Test Mode | Signed + Native | | Auto NVRAM Backup | No | No | Yes | | PAC File Support | No | Yes (slow) | Yes (Accelerated) | | IMEI Write Speed | 45 sec | 30 sec | 8 sec | | Error Handling | Generic "Fail" | Chinese characters only | English HEX codes | | Port Detection | Manual | Auto (fails often) | Auto + COM Monitor | spreadtrum imei tool v41 better
The (also known as the SPD Write Tool) is a specialized utility used to repair or write International Mobile Equipment Identity (IMEI) numbers on devices powered by Spreadtrum/Unisoc chipsets. Key Features of v4.1 Spreadtrum (SPD) IMEI Tool v4
: It offers broad compatibility across the Spreadtrum (SPD) platform, including support for newer UNISOC chipsets found in modern budget smartphones. Purpose of the Tool Spreadtrum IMEI Tool v4
than older versions because of its updated support for newer security patches. However, it is strictly a professional-use utility—ensure you have your original IMEI and the correct drivers before starting. Do you have the SPD USB drivers installed, or would you like a link to a reliable v4.1 download
: Click "Set" to choose which IDs to write (IMEI 1, IMEI 2, etc.).