Checking Settings > About Phone > Status shows "Unknown" under the baseband version. Prerequisites Before Flashing an NVRAM File
NVRAM contains unique identification data. Always try to backup your original NVRAM before attempting to flash files from another device to avoid permanent loss of original IMEI and calibration data. mt6768 nvram file
If you suffer from "Invalid IMEI" but do not want to flash a generic NVRAM file (to avoid changing your IMEI), consider these alternatives: Checking Settings > About Phone > Status shows
Data for network antennas, sensors, and GPS optimization. Common Symptoms of a Corrupted NVRAM Partition mt6768 nvram file
The most vital pieces of information stored in the MT6768 NVRAM include: