Motorola Mobility is currently in the process of a limited rollout of Android 4.0 – Ice Cream Sandwich (Version 4.0.3/Package IML77 to be precise). Instead of waiting for the wider release you can manually upgrade your Xoom to ICS.
Your will need
- A USB host cable, and
- A USB thumbdrive, or an sd-card on a single card reader also works. Not too sure about those N-in-1 card readers – I’d stay away from those. Also, it doesn’t work from the micro-sd drive in the Xoom.
I use an SD-Card connected to the Xoom via micro-USB host cable and a USB-2.0 SD-Card reader. My Xoom is the Wifi model running the latest US Honecomb 3.2 (i.e. HTK75D).
- Download the zip file from Google and save it into the root folder of your USB drive.
- Connect the USB drive to the Xoom using a Host cable.
- Shut down your Xoom.
- Switch it on and press the Volume Down button as soon as the red Motorola logo appears.
- It should say
Android Recoveryin the top left. If it doesn’t keep pressing Volume Down until you see it.
- Press Volume Up to select the option.
- When the Green Android with the Exclamation Point appears, hold the Power button and press Volume Up.
Update from USB drive.
- Pick the downloaded zip file.
- Enjoy your Ice Cream Sandwich! 🙂
Source: XDA Forums / Bauxite