Im on 4.3.4 and trying to update to 4.3.5. Last week i tried to update and after 30 mins it came up saying my ipad was corrupt (not exact words) then decided it wasn't really necessary. Today i decided to jailbreak my ipad using redsn0w. After about 2 hrs of trying i finally got it working. I then saw that it takes so long to boot eveytime you turn it off and i decided i wanted to unjailbreak it. I clicked restore on itunes and it said i have to download that update so i tried download it again and it came up with the same corrupt error it did last week. Im really frustrated because i dont want my ipad to stay like this. Anyone know a way to get the update to work???? please help!!