Steps to Unlock Micromax MMX352G data card Aircel
1. Plug-in the usb modem in your computer.
2. Close the aircel mobile partner software (Aircel mobile partner software starts running automatically when you insert the modem in your PC)
3. Extract downloaded firmware zip file and Run the MMX352G_MICROMAX_INDIA_V5.497_M_8.3.7.1.17_Google.exe file
4. Click on Start button.
5. Wait till the time setup process completes.
6. Remove the USB Modem.
7. Restart your PC/Computer.
Done!, Your modem is now unlocked and you can use any SIM in the usb modem.