This indicates a driver failure. Re-install the SPD drivers, try a different USB port (preferably USB 2.0 on the back of the PC), or try a different USB cable.
Before downloading the tool, ensure your PC setup matches these requirements to prevent connection drops or soft-bricking your device:
For IMEI issues, it is highly recommended to visit a professional service center to avoid hardware damage or legal complications.
Open Windows . Look under "Ports (COM & LPT)" to verify that SPRD U2S Diag or a similar Spreadtrum port is visible. Step 3: Configure the IMEI Tool
Despite the straightforward process, you might encounter issues. Here’s how to address them:
If the tool fails to detect the phone, check the Device Manager on Windows to see if "Spreadtrum PreLoader" or "SCI USB2Serial" is listed.
Red flags and what to avoid
Double-check the numbers. Typing incorrect digits will cause registration failures on cellular networks. Step 4: Execute and Connect
Works seamlessly across older Spreadtrum smartphones and modern smart feature phones using the SC7715 architecture. System Requirements
| Problem | Likely Cause | Solution | | :--- | :--- | :--- | | Tool stuck at "Waiting for device..." | Incorrect or missing USB drivers. | Reinstall the SPD USB drivers. Try a different USB port (use USB 2.0 if available). | | Failed to write IMEI | The phone is fully powered on, or the timing of pressing the power button is off. | Power the phone off fully. Try the process again, this time pressing the power button for exactly 2 seconds while connecting. | | IMEI reverts after reboot | The NVRAM partition is corrupted or write-protected. | The easiest fix is to flash the phone with a complete stock firmware, then immediately run the IMEI tool again without rebooting in between. | | "Write IMEI OK" but *#06# shows null | The IMEI numbers were written to the modem but not the system. | Ensure you are running the tool as an administrator. Try a different version of the tool. |
A reliable, high-quality USB data cable (avoid charging-only cables). A Windows-based PC (Windows 7, 8, 10, or 11). 2. Driver Installations
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