




Even with the correct version, errors occur. Here is how to resolve the top three issues:
| Error Code | Meaning | Solution |
| :--- | :--- | :--- |
| ERROR: S_SECURITY_VIOLATION (0xC10) | NVRAM locked | Use a newer R3.0.0.1 build with auth bypass or use a patched DA_PL.bin file. |
| STATUS_ERR (0xE200) | Database mismatch | Extract fresh BPLGUInfo and APDB from the exact firmware build currently on the phone. |
| META connection failed (0xFC0) | Wrong driver or USB port | Uninstall all MediaTek drivers, reboot, reinstall v3.0.1+, and use a USB 2.0 port (not 3.0). | write imei r3.0.0.1
| Test | R2.9.2 | R3.0.0.1 | Improvement | |--------------------------|--------|----------|-------------| | Single IMEI validation | 0.9 ms | 0.5 ms | +44% | | Bulk 10k IMEIs | 2.1 s | 1.1 s | +48% | | Blacklist lookup (cached)| 2.3 ms | 0.8 ms | +65% | | TAC database refresh | 6.0 s | 1.8 s | +70% | Even with the correct version, errors occur
POST /v3/imei/validate
"imei": "490154203237518",
"strict_tac_check": true,
"region_hint": "EU"