Here is my experience.
Bricked after a hard reset, I had to do something. I'm in Belgium, where the phone will be available only in two months and I bought it in Germany where they ran out, so I couldn't even exchange it.
Took me a while to do the manoeuvre (despite the clarity of the explanation) but I finally got it and have to thank you! I'm not sure about the firmwire I used but everything seems to work fine, even better than before. The battery life might be slightly better but time will tell. Nonetheless, two points to report.
First I had a little problem with facebook. I recently changed my account and the old one appeared during the backup. Then when I tried to delete it, I simply couldn't. The solution is to delete it on pc via your live account, then sync your live account via outlook on your phone and there won't be any error message showing no more.
Secondly, I don't see any nokia apps in the market place. I have them installed, but what about the updates? Even before it bricked, I had to update manually via the marketplace, despite the options I've settled it wasn't automatic. Actually, I've never had any updates showing up in the marketplace, I always had to look after them myself. Thus, how things gonne be now?
Anyway, thanks a lot, you did save my a*s!
edit: I mean, I know you're supposed to see updates on the "home page" marketplace, but I had to search for the app like I wanted to download it and then click oo update