Before proceeding ahead there are few points which you should be aware of and which needs to be taken care of while unlocking your usb modem:
1) Make sure that no power fluctuation happens while upgrading firmware, because it may result in crash of firmware in your data card and your data card might stop working properly.
2) Kill other running process of the modem before starting the firmware upgrade process.
3) Download Firmware for Micromax MMX352G Data Card Unlocker file and save it on your hard disk (File Size = 35.21MB).
Steps to Unlock Micromax MMX352G data card of 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
4. Click on Start button.
5. Wait till the time setup process completes.
6. Remove the USB Modem.
7. Restart your PC/Computer.
8. Done!, Your modem is now unlocked and you can use any SIM in the usb modem.
So guys comment your experience and share your results with us and with your friends. We are always happy to help you in case you require any help.