upgrade to 5.1.1 while preserving baseband

ineediphone

macrumors newbie
Original poster
Aug 8, 2012
5
0
Hey everyone, i have an iphone 4 jailbroken with version 4.1 with modem firmware 02.10.04. i want to upgrade to ios 5.1.1 while keeping the firmware the same so it remains unlocked. i used sn0wbreeze and redsn0w and even iREB, but after getting into pwned DFU mode, and opening itunes and shift+restore and clicking the custom ipsw, itunes tells me an error 1601 or 1602 has occured. can someone help me with this? any help is appreciated. thanks:confused:
 

TriJetHero

macrumors 601
Oct 13, 2010
4,953
137
World
Your host file is still pointing to Cydia instead of apple.

Connect phone to usb
open TinyUmbrella
In the advanced tab UNcheck Set host to cydia.
Close TU
On a windows machine restart computer

Now try again with your custom firmware and pwned-DFU
 

ineediphone

macrumors newbie
Original poster
Aug 8, 2012
5
0
the set hosts to cydia box is already unchecked, and if i were to try and check it, the box is grayed out, i cant do anything to it, any suggestions?
 

ineediphone

macrumors newbie
Original poster
Aug 8, 2012
5
0
actually i got it to work, and the baseband stayed the same, and while trying to jailbreak it, its now stuck at the apple logo, any suggestions?
 
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