That's not bricked. There's no fix for bricked.
To fix both your problems, I'd sbf to 602, then do a factory reset. Don't open market yet. Then go into settings... about phone and check for updates. The 605 update should start downloading and when that is installed, I'd go into stock recovery again and and factory reset again. Only then would I open market and your apps will start downloading. If you want to root, I'd make sure it works well before messing with it.
Your paid apps will be available in Market. Google stores many of your settings. It's really not that bad and you'll end up with a fast phone again.