Spreadtrum IMEI Tool v4.1 (also known as the WriteIMEI Tool ) is a specialized utility designed for devices powered by Spreadtrum (SPD) or UNISOC chipsets. It is primarily used by technicians to restore original IMEI numbers, Bluetooth addresses, and Wi-Fi MAC addresses that may have been lost after firmware flashing or formatting. Key Features of v4.1 Multi-Port Writing

Beyond IMEIs, it can often write Bluetooth addresses, Wi-Fi MAC addresses, and serial numbers. Driver Integration: Specifically optimized to work with the latest UNISOC/SPD USB Drivers for Windows 10 and 11. How to Use the Tool Spreadtrum WriteIMEI tool

If you are dealing with invalid IMEI issues, "Null" baseband, or communication errors on your SPD-based smartphone, the new Spreadtrum IMEI Tool v4.1 is now available. This updated version provides a stable environment for repairing or writing IMEI numbers on a wide range of Spreadtrum/Unisoc chipsets. Key Features of v4.1:

Open WriteIMEI.exe , select the correct COM port from the dropdown, and choose Normal Mode .

Click Start or Write and connect your powered-off device while holding the boot key. ⚠️ Important Legal Note