Question [Q] Motorola Xoom z604

I am completely new to tablets. I recently acquired a Motorola Xoom Z604 nice tablet but the os is 4.0.3 Is there a tutorial that can show me how to upgrade the os on this xoom? Much appreciated. I am a complete noon with this tablet but read that updated os will make it better and nicer.

Thanks.. oh by the way I live in Toronto