Don't forget to back up your device to internal storage or to your memory card. I don't know which one the Omnia has.
You can get Spb Back up and back up all files on your device or just the ones you want to back up, to your pc and/or internal storage or memory card.
Spb Back up is $19.95 but you can try it out first with with the free 14 day trial period.
Here's the link >
http://www.spbsoftwarehouse.com/products/backup