The official, standard utility used to write physical data directly to MediaTek modems.

For device-specific instructions (e.g., Ulefone Armor 7, Blackview BV9800), always consult XDA Developers or the manufacturer’s service manual.

: The specific .txt map file from the device's exact stock firmware firmware.

Ensures the PC communicates with the phone in MediaTek Preloader and Brom modes.

When you flash an incorrect firmware or perform a hard format via SP Flash Tool, these partitions are often wiped out. Because the baseband processor cannot verify the encrypted IMEI data inside NVDATA, it defaults to an invalid or null state. Essential Prerequisites and Tools

If the IMEI returns after a reboot, the repair was not permanently written to the NVRAM. Re-attempt the process, ensuring the driver installations are correct.

Below are the primary technical methods utilized by technicians to restore missing IMEIs on Helio P60/P70 chipsets. Method 1: Using Maui Meta Tool (Official Free Method)

Click and load the BPLGUInfoCustomAppSrcP... file (the Modem Database file extracted directly from your device’s official stock ROM). Enter your original 15-digit IMEI numbers.

This method works on some older firmware versions or devices where the CDS Information menu is still accessible.

This is the safest method for corrupted NVRAM where the phone still boots.

If your device truly has a lost/null IMEI due to firmware corruption (common after a failed flash or NVRAM wipe), the path is:

Method D — Re-flash stock firmware including modem/NVRAM

Disclaimer: IMEI repair should only be performed to restore the original IMEI number of a device. Changing an IMEI to a different one is illegal in many jurisdictions. Always ensure you are compliant with local laws.