just to add to what seanosaur mentioned here, i personally haven't been over to the doc's website, but i find it interesting of all the different instructions that are out there.
basically i followed the pdf instructions that came from the "unofficial rom" post over at modaco and flashing my omnia worked like a charm. then i went to Adryn's 1.0 base, and now i'm on 1.3. i haven't had any issues with mine.
when you flash to the unofficial 6.1 rom, you won't lose anything, and you'll have gps unlocked for good.
however, when you flash to a custom rom, you will lose some programs, but they can be put back in. you just have to look for the cab file and install. it's that's easy to do. if you look at the release notes for each rom, the chef will tell ya what's been removed/installed. then just take it from there.
hope this helps, happy flashing, and welcome to the community.
