iTunes refusing to downgrade from 1.1.2?

[AVR2]

A friend (not me ) has accidentally updated his unlocked 1.0.2 to 1.1.2. He's tried using iTunes to downgrade to 1.1.1, but he says that even though he's alt-clicking and selecting the appropriate firmware, iTunes is refusing to allow him to downgrade.

Is this a problem with his setup specifically, or a known issue?

 

[Jeuk]

he is probably just getting an error at the end.
He should use either iBrickr to complete the installation(right after he finished unpacking), or try iphuc32 (google it).

 

[cdavi060]

i am actually having the same problem you are....i think its itunes 7.5 that has the problem...as this occurs on my mac every time but i tried it at work on a PC with 7.4 itunes and it worked

 

[jav6454]

i am actually having the same problem you are....i think its itunes 7.5 that has the problem...as this occurs on my mac every time but i tried it at work on a PC with 7.4 itunes and it worked

I would highly recomend using iTunes version 7.4.2. That's the one I have.

 

[bbplayer5]

you also need to use tiger, not leopard...

 

[brando88]

With itunes 7.5 and leopard, I am able to downgrade phones... I've done it like 20 times so far and then re-upgraded them to work on 1.1.2.

You need the newest version of independence. and the right readline library.

The independence is a beta and requires a little bit of work to get it going, but its all explained detailed in the readme.

 

[foobarbaz]

I think the iPhone needs to be in DFU mode for downgrading.