For Xiaomi devices with MediaTek (MTK) chipsets, repairing a "Null" or "Invalid" IMEI typically involves restoring the device's original credentials after a software corruption or firmware flash.
.bin or .img with timestamp + device serial number.: Free, official MediaTek tools often used for writing IMEI to devices with a "Null" or corrupted baseband. xiaomi imei repair tool mtk
Xiaomi knows this tool exists. In recent MIUI updates (starting around Android 11/12), they added "IMEI write protection" on newer MTK models (like the Redmi Note 11 series). The repair tool suddenly stopped working. Why? Because blank or repaired IMEIs were being used to bypass Google’s FRP (Factory Reset Protection) and reactivate stolen phones. For Xiaomi devices with MediaTek (MTK) chipsets, repairing
Install Drivers: You must have the MTK USB VCOM drivers installed on your PC. Reads existing IMEI1, IMEI2, and MEID (if applicable)
If you own a Redmi Note 11 (MT6833), Redmi Note 12 (MT6853), or Xiaomi 13T (Dimensity 8200), the old Maui META tool will give you a "Authentication Failed" error. This is due to MediaTek's new Secure Boot (SLT).
Purpose: These tools should strictly be used to recover legitimate hardware that has suffered software-level data corruption.