| Issue | Symptom | Root Cause | |-------|---------|-------------| | Corrupted IMEI | IMEI = 0 or NVRAM WARNING: Err=0x10 | NVRAM partition overwritten | | Invalid RF cal | No cellular signal, modem crash | Incorrect LID 0x0A checksum | | MAC address mismatch | Wi-Fi/BT MAC = 00:00:00:00:00:00 | LID 0x03/0x04 missing | | NVRAM full | Cannot write new calibration | Partition exhausted (rare) |
Flash only these partitions to avoid soft-bricking the phone. mt6768 nvram file
The register addresses and partition sizes differ. | Issue | Symptom | Root Cause |