How do I access my iPhone 4's UDID?

I have just bought an iPhone 4 for development.

Unf开发者_如何学Pythonortunately, I forgot to register my phone to my development account before I tried installing the iOS 4.3 beta 2 software.

Now I can't restore my iPhone because I haven't got my UDID in my developer account, and I cannot get the UDID in iTunes because my phone is stuck in recovery mode.

Does anyone know how to restore my phone, or how to get the UDID into the developer account so it can be restored?

Thank you

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Try this online service — http://get.udid.io You should open the site on your mobile, tap the button and follow instructions, I've been described in my blog. It's easy as taping "Next" every time. Hope it helps.

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You should be able to just click "Restore" in recovery mode in iTunes and it'll restore the current 4.2.1 firmware.

Perhaps you need to put it in DFU mode first.

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Can't you downgrade the firmware by downloading the older version from the internet and hold shift and click restore and select the firmware file?