undo unlock leads to error 1601

[Helkinney]

Hi,

I did the jailbreak with my iphone 4 mit iOS 4.3.2 und baseband 4.10.01.
Now i would like to undo the jailbreak.

I tried to install the non-custom 5.1.1 via itunes which leads to error 1601.
Reinstalling itunes and changing the USB cable didn´t work. I then tried to edit the host-file leading to the same error message.

 

[TriJetHero]

download tinyumbrella, go to advanced tab and make sure Set host to cydia is UNchecked, close TU

Put your phone in DFU-mode and restore.