The tool communicates with the device via DIAG mode (if the phone is powered on) or Flash Mode (using specific boot keys while the phone is off).
The latest version of the SPD module software installed from the official UMT support access.
Follow these steps carefully to connect your device and rewrite the IMEI structure. Step 1: Launch the Module and Select the Model
The International Mobile Equipment Identity (IMEI) is a unique 15-digit number assigned to every mobile device. It functions as a digital fingerprint, allowing cellular networks to identify valid devices and block stolen ones. When a device loses its IMEI due to a software error, it often appears as "null," "invalid," or "unknown," rendering the phone unable to connect to a mobile network, make calls, or use mobile data.
: The phone's security patch might block direct writing. Try switching the connection mode in UMT from "DIAG Mode" to "Boot Mode (Flash Mode)" and use a working pac firmware loader configuration. 3. Baseband Unknown spd imei repair umt tool
Watch the log output in the UMT window. The tool will parse the NVRAM/Security partition, write the new IMEI parameters, and verify the checksums.
Spreadtrum (SPD) is a popular Chinese mobile chip manufacturer, and their processors are widely used in budget-friendly Android smartphones. However, due to various reasons such as software issues, firmware corruption, or even physical damage, the IMEI (International Mobile Equipment Identity) number of an SPD-based device can become null or invalid. In such cases, users face difficulties in making calls, sending SMS, or accessing mobile networks. Fortunately, the UMT (Ultimate Multi Tool) tool provides a solution for repairing the IMEI of SPD devices.
Latest Spreadtrum/Unisoc ROM/Diag USB drivers installed on your Windows PC.
Release the keys immediately once the UMT software detects the device and displays "Changing to flash mode" or begins uploading the bootloader files. Step 5: Finalizing the Repair The tool communicates with the device via DIAG
Unlike simple "imei changer" tools that may be illegal or unstable, UMT is designed for "repair." It allows users to write original IMEIs back to the phone. The interface allows for single SIM and dual SIM configurations. It also supports the repair of other NVRAM items often corrupted during flashing, such as WiFi MAC addresses and Bluetooth addresses.
| Feature | UMT | CM2 (Maui Meta) | Miracle Box | Z3X EasyJTAG | |---------|-----|----------------|-------------|---------------| | SPD IMEI success | 95% | 70% (old chips) | 85% | 90% | | Android 13+ support | Yes | No | Limited | Yes | | Requires dongle | Yes | No (free) | Yes | Yes | | Beginner friendly | Medium | High | Medium | Low | | Price | ~$180 | Free but ad/trojan risk | ~$120 | ~$250 |
This technical guide outlines the complete process, hardware requirements, and troubleshooting steps for repairing SPD IMEIs using UMT. Legal and Regulatory Compliance Notice
In many jurisdictions (including the US, UK, and European Union), changing or altering a device's original IMEI number is strictly illegal. Step 1: Launch the Module and Select the
If you want, I can instead help with one of these legal, safe alternatives:
Check the boxes for and/or IMEI 2 (if it is a dual-SIM device).
Reinstall the official Spreadtrum generic drivers and restart the PC. Wrong boot key combination or locked bootloader.