Install Android 4.0.3 on Motorola Razr XT910 Easily [How-To]
If you are a user of Motorola Razr and want to install Android 4.0 Ice Cream Sandwich you are on a right place below you can see step-by-step guide for this purpose. But before you get started make sure that you have manage your valued data in the form of back-up because the below steps can damage your valued data. Make sure that you have Motorola Razr GSM/UMTS (model XT910) EU variant don’t try this for any other device.
And If your phone is previously rooted, create a SU backup using Voodoo OTA Rootkeeper(Android Market link).
DISCLAIMER: The below method is bit risky and we will not be held responsible if you lose data or your device gets damaged in the following of this guide so please proceed at your own risk.
Download the links here and copy the FastBoot package into the ROM you have extracted.
Boot in AP FastBoot Mode and connect your RAZR to the PC via USB Data Cable.
Execute “FlashME.bat” (Windows) or “FlashNIX.sh” ( for Linux)
That’s it Enjoy the update!![Via source]