Finally the much awaited Android 4.0 Ice Cream Sandwich (ICS) update for the Motorola Atrix 2 phone has been rolled by Motorola in India. The upgrade is a available as OTA (Over-The-Air) which means, you can directly download the update to your Motorola Atrix 2 phone.
The update is a 256MB download and you should ideally connect to your Wi-Fi or a 3G connection and also connect the charger to the phone to ensure the phone battery does not drain out.
Normally you will get a notification about the update, however if you have not still now, you can download the update to your phone manually. On your Motorola Atrix 2 phone, go to Settings > About Phone > System Updates. You will then be shown the update download confirmation. Go ahead and download it