iPod touch [SOLVED] Downgrade to 3.1.3 from 4.0b1

[palz]

I have been running 4.0b1 for some time now, and I want to get back to 3.1.3. So I tried it on windows, and I got locked into DFU mode.

I tried it on a mac, and it froze during the restore (couldn't figure out how to reboot it for hours )

So I am in DFU mode, plugged into my windows machine.
I used iRecovery, but it doesn't detect my device.

 

[Lambros]

Try this:

Turn off your iPhone
Ensure it is plugged into your computer (and still off)
Hold on/off for 5 secs
Continue holding on/off and press and hold home for 10 secs
Release on/off and continue holding home for about 10 secs (or longer until computer recognises it)
Next, iTunes should pop-up with a thing saying you are in recovery mode or DFU mode or something
Now, shift-click restore on iTunes, and select the 3.1.3 firmware and restore to it (might be different to shift-click) on a mac
Finally, tell me if it worked

Good luck!

 

[palz]

Umm, thats what got it in DFU mode but when I tried it on a mac, it said:

Extracting software...
Verifying iPod restore with Apple... (or Saurik:D)
Preparing iPod for restore...
Waiting for iPod...
Error 1603

On a PC:

Extracting software...
Verifying iPod restore with Apple... (or Saurik:D)
Preparing iPod for restore..
Error 13 (because of Windows)

Anyway, iRecovery didn't detect my device -- unless there's an other way...

 

[Lambros]

I believe I used to have error 1603 or whatever it was when downgrading from 3.0 beta (or something of the like) to 2.2.1 (i think??). Anyway, if I jailbroke my device when the downgrade failed, I think it worked fine after. Try this, it might work. Nothing to lose.

 

[palz]

So I should try redsn0w? For 4.0b1?

 

[palz]

Come on, I have a freaking bricked ipod... or paperweight right now.

Can't anyone share their advice?

 

[Lambros]

No, you downgrade to 3.1.3. Then, it will come up with the error. Jailbreak with redsn0w as if you were jailbreaking a 3.1.3 device. I'd do this all for you but I dont have 4.0 beta to even try it. I just know this from experience with 3.0 beta. Use redsn0w, not blackra1n. Good luck! (and tell me how it goes)

 

[upaymeifixit]

What does iRecovery say about it?

I don't know much (probably not as much as you) about this stuff, but if it helps at all, you could try a guide I wrote about downgrading. Here it is.

 

[palz]

Well, I resolved it!

Here's how:
Put it in DFU MODE (not restore mode)
Selected 3.1.3 ipsw
Restored (you will get a white screen at a point)
----
Downgraded to 3.1.2
Jailbroke

 

[tlseverson]

How do you put your iPhone in DFU mode?

 

[upaymeifixit]

How do you put your iPhone in DFU mode?

With google.

 

[philosopherdog]

Ok but this is the iPod forum not iPhone.

 

[liamkp]

With google.

Quite a powerful resource.