Disclaimer: This guide is for educational and repair purposes only. Repairing IMEI is illegal in many jurisdictions if done to change the original IMEI to a different one (cloning/spoofing). In most countries, it is only legal to restore the original IMEI that was printed on the device box/battery sticker. Proceed at your own risk. I am not responsible for any damage to your device or legal consequences.
What you need:
The MediaTek MT6771 (also known as the Helio P60) is a popular 12nm chipset found in many mid-range Android devices (e.g., Ulefone, Blackview, Oukitel, Doogee, and some Xiaomi or Realme models). IMEI (International Mobile Equipment Identity) numbers are unique identifiers for mobile devices. Corruption or loss of IMEI can occur after firmware flashing, rooting, or software glitches, resulting in “Invalid IMEI,” null IMEI, or no network service. Mt6771 Imei Repair
Procedure:
To help me tailor instructions specifically to your device, could you let me know: The exact model of your MT6771 phone? Disclaimer: This guide is for educational and repair
Steps:
He worked methodically. First, he imaged the board, copying every sector and logging offsets. He traced the EFS partitions, the NV items that normally stored identity strings. The default tools returned errors—access denied, signature mismatch. So Rafi wrote his own small harness: a script that spoke slowly to the bootloader, mimicking the handset’s own initialization. He learned the board’s quirks—the way the PMIC responded after a cold boot, how a certain GPIO needed a gentle pull to let the debug UART wake. Boot the device into BROM mode (Vol+ / Vol- + USB)
Disclaimer: This article is for educational purposes. The author and publisher are not responsible for any illegal use of IMEI repair tools or data loss resulting from the procedures above. Always verify your local laws regarding IMEI modification.