The phone did not correctly enter Meta Mode. Ensure drivers are installed, and try a different USB port/cable.
The MD1_DB and AP_DB files must match the firmware currently on the phone. Mt6771 Imei Repair
| Feature | Detail | | :--- | :--- | | | MediaTek MT6771 (Helio P60) | | Common Symptoms | "Unknown IMEI", "Baseband Unknown", "Invalid IMEI" | | Primary Cause | Flashing custom firmware without backing up NVRAM or formatting nvdata . | | Free Tools | SN Write Tool, Maui META, SP Flash Tool (for baseband restoration). | | Commercial Tools | ChimeraTool, UltimateMTK2, NCK Dongle, SigmaKey | | Legality | Legal to restore original IMEI in some jurisdictions; Illegal to change IMEI in the USA, India, Turkey, and many others. | | Success Rate | High with commercial tools; Moderate with Meta tools if baseband is valid. | The phone did not correctly enter Meta Mode
Check the status bar for a network latch, and test a voice call along with cellular data toggles. | Feature | Detail | | :--- |
Whether the device currently shows an or just "Invalid IMEI" .