It's so frustrtaing. I was updating it through my mac and then in the middle it decides to turn off. now all i get it that blinking red LED light and it won't turn on now metter how many times i take out and reiinsert the battery, or connect through charger. remember, i have a mac. how can i fix this?

Probably not much you can do with Mac OS X at this time.
You might need to find a friend with a Windows PC and ask them for help.

i do have crossover installed though, so most windows programs can run on my mac..

My previous answer still applies. Crossover will be of no help to you when running BlackBerry Desktop Manager or javaloader.exe for Windows.
Those are the utilities you'll likely need to use to correct your BlackBerry problem.

had the same experience with my 8820. quite frustrated at that time, but managed to do something and voila.. it worked.
so, try this: turn off your 8820 and take out the battery then connect the 8820 (WITHOUT the battery attached) to your USB port. if you see an image of a phone with a red line on it then you r half done.
leave it for a while (i tried 10 minutes) then unplug your BB from the USB then put in the battery again and try starting it up.

happy trying...