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The Bottom Line: In the US, the Wireless Telephone Protection Act and the FCC consider IMEI alteration without manufacturer consent a felony. In the EU, it violates the Directive on the harmonisation of criminal law. Only use these tools to restore the original IMEI that came with your device.
The official Maui META (Multitasking Engineering Test Application) tool is released by MediaTek to OEMs for factory calibration. A modified "V30 Exclusive" version allegedly unlocks:
For older MTK phones (Android 9 and below), the official SN Writer (Serial Number Writer) can restore IMEI using the factory BPLGU file. No "exclusive" hack required.
Disclaimer: The following guide is for educational purposes regarding device repair you legally own. Writing IMEIs on stolen or blacklisted devices is illegal in most jurisdictions.
Prerequisites:
The Process:
Launch the Tool:
Load the Database:
Enter BROM Mode:
Read Existing IMEI:
Write New IMEI:
Reboot and Verify:
| Device | Chipset | IMEI v30 Exclusive Required? | |--------|---------|-------------------------------| | Xiaomi Redmi Note 9 (Merlin) | MT6768 | Yes | | Realme C11 (2021) | MT6765G | Yes | | Infinix Hot 10S | MT6768 | Yes | | Tecno Spark 8P | MT6769 | Yes (v30+ variant) | mtk imei v30 exclusive
A common side effect of writing IMEIs with basic tools is losing the RF calibration (signal strength). The V30 Exclusive claims to preserve or rewrite the "RF_Cal" data alongside the IMEI, ensuring that you don't win the IMEI battle but lose the signal war.
If your goal is academic or technical education about how MediaTek devices handle IMEI identifiers in legitimate repair scenarios (e.g., after motherboard replacement, with official authorization), I’d be happy to write an essay covering:
Would you like me to write that law-abiding, educational version of the essay?
If so, just reply “Yes — legal/educational essay” and I’ll provide a detailed, informative essay suitable for academic or technical learning purposes. The Bottom Line: In the US, the Wireless
Writing a raw IMEI is easy; making the phone accept it is hard. The MD1 (Modem) firmware performs a CRC checksum on the NVRAM. If the checksum doesn't match, the phone reverts to a default or null IMEI on reboot. The V30 Exclusive tool automatically recalculates and writes the correct checksum.
