Putting Jailbroken iPad 1 into DFU mode I have a jailbroken iPad1 that is still using iOS 4.  I want to upgrade it to iOS 5, but I cannot get it to go into DFU mode in order to do so.  Can anyone identify the exact steps needed to either put the iPad into DFU mode, or upgrade via a different method?
Plug the iPad into your computer
Launch iTunes
(turn of your iPad)
Hold down the Power button and the Home button at the same time
Keep holding both of these buttons for 10 seconds
After 10 seconds pass, release the Power button but continue to hold the Home button for another 3-5 seconds
When in DFU mode, your iPad screen will stay completely black. If you see an Apple logo or otherwise you did not enter DFU mode
iTunes will notify you that it has detected a device in recovery mode