NVRAM (Non-Volatile Random Access Memory) on the MT6761 is a dedicated partition (typically NVRAM , NVRAM2 , or nvdata ) that stores device-specific configuration and calibration data . Unlike standard Android user data, this persists across factory resets and OS reflashing.
It is critical for , IMEI numbers , Wi-Fi/BT MAC addresses , and sensor tuning . Key Data Stored in MT6761 NVRAM | Feature Category | Specific Parameters | Purpose | |-----------------|---------------------|---------| | RF Calibration | TX power levels, RX gain, IQ mismatch, AFC (Auto Frequency Control) | Ensures cellular (2G/3G/4G) meets regulatory and network standards | | IMEI Numbers | IMEI1, IMEI2 (for dual-SIM variants) | Unique device identification for mobile networks | | MAC Addresses | Wi-Fi MAC, Bluetooth MAC | Network identification for wireless interfaces | | Serial Number | Device S/N | Factory tracking and warranty validation | | Sensor Calibration | Accelerometer, gyroscope, proximity sensor offsets | Accurate sensor behavior | | Security Keys | Secure boot keys, DRM keys (Widevine) | Content protection and system integrity | | Factory Flags | Barcode, production date, test flags | Manufacturing traceability | File Structure of MT6761 NVRAM On the file system or in firmware dumps, the NVRAM data appears as: mt6761 nvram file