I would advise avoiding bootleg software. It'll be out free, legal, and automatic in a couple months or so.
Well, I actually did update+jailbreak to 3.0 beta 3, and just to advise all of you, it is slow as a beta would be, and the most annoying bug of all is that wifi (most of the time) and basically your phone service doesn't work (data, etc, it just shows 0 bars or no service).
I advise all of you to just wait it out until the full 3.0 comes out this summer, I mean april flew by pretty quick didn't it

just a couple more
weeks lol.
Anyways today I had been trying to unbrick my 3G (I don't care about basband, ATT ftw) and I had 0 luck on my macbook, trying to downgrade back to 2.2.1, I had tried EVERYTHING!! I was at my dads house doing this so yeah my PC is at my moms house, so I had to go all the way back (after spending like 5 hours on this) to try it there and thank god it worked, and I am back to normal thanks to my backup

so for the record, use a PC to unbrick it or w/e if you can't restore it back.
I actually like getting these buggy stuff and trying so hard to make something work again, because everytime you get to learn something new

now I know how to work this thing for the future if anyone I know messes up, so even if you screw yourself, in actuality you don't.