Ideally, an NVRAM file is a backup created from before it had issues. If you have a backup ( nvram.bin or similar), you can restore it.
Do you have access to the phone's to verify the hardware variant? Share public link
: Data required for the phone's modem to communicate with network towers. Connectivity Addresses : MAC addresses for Wi-Fi and Bluetooth hardware. Calibration Data : Fine-tuning settings for sensors and radio frequencies. Stack Overflow Common NVRAM Issues
This is the method associated directly with downloading the "KG5k NVRAM file." You will need:
Restart your computer to ensure the drivers initialize correctly.
Using unverified scripts or custom recoveries that accidentally overwrite protected blocks. Prerequisites Before Flashing the NVRAM File