i bought iPhone 2G for my self a week ago.it was unlocked so i had no problems.than i wanted to upgrade it to 2.2 version that is on Apple site.i downloaded itunes and with that i upgraded my iPhone to 2.2 version.when i turned it on it opened but didnt show the menu i mean i could not do any thing not even make call.then when i conected it to iTunes it said that my phone doesnt support SiM so i undrstand that it is locked.i triyed to unlock it with QuickPwn 2.2 i just started to do it when it said that press HOME and POWER i just disconected iPhone from my computer.and now when i turn iPhone on it just show Apple symbol and nothing all.then shut down .then open again and Apple symbol again.and nothing more..what should i do..how can i make it work ???PLEASE HELP HELP ??????????????? i have internet connection on my computer will it cause any problem when doing any operation like unlocking iPhone???

Hi. No need to panic. Its fixable.

First you need to put your iphone into DFU mode:

Turn off your iphone.
(Hold both top and home buttons together until screen goes blank, then quickly let go).
Then follow the video below to put your iphone into DFU mode:
http://uk.youtube.com/watch?v=-KmHNSE3CZI

Click Restore in itunes. Run QuicPwn afterwards.

what time will it take to do all this things.i mean how many minutes or hours?

(This will take 10 seconds):
Turn off your iphone.
(Hold both top and home buttons together until screen goes blank, then quickly let go).

(This will take 1 minute):
Then follow the video below to put your iphone into DFU mode:
http://uk.youtube.com/watch?v=-KmHNSE3CZI

(This will take 10 minutes):
Click Restore in itunes.

(This will take 10 minutes):
Run QuickPwn afterwards.

Now the method used to restore my iphone from having black screen and apple symbol.. Once I get itunes up and it recognizes my ph if I restore it being unlocked will it lock my phone back up?