You typically need to fix "Unknown Baseband" by flashing the correct official firmware before attempting to restore NVRAM data. Recommended Tools for Use
XDA is the #1 Android developer community. Go to the forum section of your specific MT6765 device (e.g., Redmi 7). Look for threads titled: [FIX] Restore NVRAM / IMEI for MT6765 nvram database file mt6765 download free
: Holds radio frequency (RF) calibration data necessary for stable network signals. 2. Common Errors Requiring this File You typically need to fix "Unknown Baseband" by