Well, i live in Venezuela and tried to update my 8820 blackberry, downloaded the program, installed, and accept everything, but a the end the application says that there was an error during the updating, so i procceded unplugin it, turn on my BB and it start loading with the hourglass and stuff, but it doesnt turn on, i waited like 10 mins and still loading, tried pulling out the sim card and battery, nothing happens, PLEASE I NEED HELP!

Sorry if my english is bad

I would pull the battery again and wait a good 30 minutes to see if it will boot up. Maybe it won't, but I had an experience one time where it took a long time after an OS reinstall. I know yours errored out. But worth a try. Then, if it doesn't boot up, do a wipe with JL_CMDR and install the OS. See:

How do I wipe the BlackBerry using Jl Cmder? - BlackBerryFAQ

What to do next if Jl Cmder will not connect and wipe - BlackBerryFAQ

I had very similar things happened to my 8800 - got an error while upgrading and tried it 2-3 times and then it will not turn on, nor does the LED light lit. It is dead now. Tried JL commander and Loader w/no jvm and nothing works.

If you find anything, please let me know.

Wirelessly posted (8700g 2007-04-07)

Do the jlcomm download the newest os and run it again most time the os download was bad