Hi alif, i just did the exact same mistake as you did! Aiya... So dumb of me!

Now i have the exact same problem like yours, that is, repeated restart loop but hang at 40%, plug to itunes on win xp no detect, TU also no detect, press home + sleep also no effect. How did you solved yours?

By the way i'm also using ipad1 3g with jb 4.2.1.

Already installed latest itunes, plug with usb for 1 hour already still cannot detect. Is it bcoz my ipad keeps on looping the reformat process that stops itunes from recognising the ipad?
How long did you wait before itunes detected your ipad?

Should i just leave it looping until it runs out of battery, then charge it and see if the problem goes away? Or do you think those boys at Machines Midvalley can help?

This post has been edited by andrewhtf: Aug 30 2011, 10:32 PM

Ah... I realised i attempted the DFU mode incorrectly. I released both buttons at 10 second instead of holding onto the home button for another 3 seconds. I'm gonna try it again tonite with another laptop.

By the way just for sharing, 4.3.5 only have tethered jailbreak. So that means once you did your JB, you shouldn't turn off your ipad otherwise you'd have problem turning it back on. Then you have to plug it back to pc, DFU and restart your ipad using some programme, i forgot something something sn0w.

By the way if you have jb 4.2.1 before this, try using TinyUmbrella to see if it can pull the blob from Cydia. If can then you're in luck, can downgrade the iOS and then fully JB again.

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Added on September 1, 2011, 5:32 amjust an update.

managed to revive my ipad. and how lucky i am, i have 4.3.3 shsh saved on cydia!

now i'm running on iOS 4.3.3 and just completed jailbreak! i am so happy!!!!

This post has been edited by andrewhtf: Sep 1 2011, 05:32 AM

Yes, PROVIDED you have SHSH for the said firmware version saved. Downgrade or upgrade to any version you want using TU and Shift+Restore method.