iPhone OS 4 Upgrade failed - now got a bricked phone. Apples fault?

Unplug, then replug it in. iTunes will be aware of iPhones/iPods in recovery mode, and will let you restore them.

Yeah I've had the same problem, iphone is now dead!!
Won't reboot and won't restore!!!

Access to another computer? Try another, or try reinstalling itunes, see if that helps.

mines doing the same thing, now its stuck on the on the plug into itunes screen and wont restore on my macbook or do anything, so im currently sat with a phone that will not work now.

mines never done this before, ever, what are you supposed to do with the phone now then?? cos mine is currently useless

Try DFU mode?
http://www.ihackintosh.com/2009/06/recovery-mode-and-dfu-mode/

I've gone into the iphone software update folder and removed the iphone 4.0 file thats in there,
Reconnected my ipod and now it seems to be downloading 4.0 again,
it's gonna take about 20 minutes.....

get it into DFU not recovery and try again n see how u go i had the same issue with mine when gm came out and i had to put it into DFU mode and for all you people about to ask isnt DFU and Recovery Mode the same NO THERE NOT!!!!!!....

tried DFU said the exact same thing, unknown error(21)

I wish mine would brick so i could go get a new phone! I dont think im going to update though in order to get the most for my 3gs when i sell it after i get my 4.

I updated my wife's phone, its def cool! Weird to unlock the phone and have the same background as the lock screen. Spell checker is cool too! Havent played with multitasking or anything yet.

M3G4UK wrote:
Sad thing is, this is becoming regular with every new iPhone major software update. Apple needs to learn from this, and learn FAST. I will certainly NOT be buying an iPhone 4 now.

Curious. Not once with an iPhone update, nor before that with an iiiPod touch update, nor before that back to the 3G iPod in 2003 have I once had an issue with a firmware update. Looks like that must be the norm on these updates and that Apple has it under control. MAkes me wonder what in your personal setup is causing the issues. I know folks hate to hear that, but facing a lack of complete install failure for everyone across all platforms and devices, it is most likely not a problem with Apple's end of this.