How to fix Invalid IMEI on Mediatek devices

This is a short tutorial on how to fix IMEI problems on your Mediatek MT6592 devices.

1. Download 'Invalid IMEI fix.rar' archive from here, here or here. Extract it.
2. Install the "SmartPhoneDriver" choose x64 or x86 and click on "spinstall.exe" it will install the vcom drivers needed for "BIRDA_SN_STATION_MT6592", I included the "MT65xx Preloader" drivers if you need it install with Device manager
3. Install "BIRDA_SN_STATION_MT6592", click on "setup.exe" "next, next, next, Finish"

4. Open "BIRDA_SN_STATION_MT6592" on the desktop icon

5. Select "USB VCOM", "SmartPhone", "WCDMA+TD", "System Config" Select only "IMEI" and "Dual IMEI" don't choose "Dual IMEI Same"

6. In "Data Base" click on "MD DB_1" go to extracted "db" folder and select file "BPLGUInfoCustomAppSrcP_MT6592_S00_MOLY_WR8_W1315_MD_WG_MP_V34_P2_1_wg_n", click on "AP DB" and select file "APDB_MT6592_S01_KK1.MP1_", click "OK"

7. Click on "Start" and write your IMEI_1 and IMEI_2 (the original Imeis of your phone is on the back cover behind the battery), click "OK"

8. Shutdown phone and take off the battery, insert battery again and connect the usb to phone, it will start to write imei to device and you will never gonna loose your IMEI again

9. After finished disconnect phone and turn it on.

Enjoy!