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After reboot:
| Error Message | Cause | Solution | |---------------|-------|----------| | No COM Port found | Driver not installed or phone not in DIAG mode | Reinstall Spreadtrun drivers; try different USB port; use USB 2.0 | | Write failed at address 0x... | NVRAM partition locked | Click “Unlock NVRAM” before writing (requires root on some ROMs) | | Checksum mismatch | Corrupted download | Re-download the fixed tool; check MD5 hash | | Tool crashes on launch | Missing VC++ runtimes | Install Visual C++ AIO from Microsoft | | IMEI shows “000000000000000” | Incorrect port selected | Manually change COM port in Device Manager to COM1-COM4 | sc7715 imei tool download fixed
Are you struggling with NULL/Invalid IMEI on your Spreadtrum SC7715 device? If your phone shows "Unknown Baseband" or you cannot connect to mobile networks, you are in the right place. After reboot:
Many tools available online are outdated or contain malicious files. We have tested and uploaded a fixed version of the SC7715 IMEI Write Tool that works seamlessly on Windows 7, 8, 10, and 11. | Error Message | Cause | Solution |