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Update corrupt 4.3.5

FYI the first time I did it it took me 3 hours to fix error 21 error 1600

I installed a beta version of iTunes then restored to iOS 4.3.5 now running GM 5.0
 
before jailbreaking i was on os 4.3.4 because it wouldnt let me download 4.3.5 another error.....so im trying to restore to 4.3.4
 
If you don't care about jailbreak easiest way is to download iOS 4.3.5....uninstall iTunes reinstall ,then try to restore just like normal shift restore select 4.3.5 if error 21 set to dfu mode the restore
 
Your problem is that you have redirected your hosts file to Cydia by using TU incorrectly. You should have followed my guides on this site which are designed to avoid the problem.

Open TU. Switch to the Advanced panel, then UNTICK "Set Hosts to Cydia on exit", then close TU.

A restore of 4.3.5 will now succeed because you are correctly pointing iTunes back to Apples signing servers.
 

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