iTunes error message

Tug

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Aug 4, 2008
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#1
As many of you know Im new to the world of jailbreaking but I've been doing quite a bit of reading and am getting a better grasp on it. Im currently trying to downgrade from IOS 6.0.1 to 5.0.1 through iTunes. I've downloaded Restore ipsw 3,3_5.1.1.1_9b206 but whenever I try to restore iTunes goes through the process of extracting the software I receive the error message "The iPhone could not be restored, this device is not eligible for the requested build". Can anyone give me some insight as to what Im doing wrong? I've already succeeded at J/Bing my phone with IOS 6.0 but it ran "buggy" so I'd like to restore IOS 5.1.1. Thanks, Tug
 

fijiman

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Feb 13, 2011
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#2
You need to have saved your SHSH blobs....if you want to restore to 5.x.x
 

Tug

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#3
Thanks Fijiman, when i had cydia installed the phone was showing that i had 5.1.1 saved on their server. When I tried to rejailbreak after upgrading to 6.0.1 using redsn0w i saved 5.1.1 but Im still receiving the same error.
 

fijiman

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#4
Don't use iTunes.... Just use the new redsn0w to do the restore.
 

ring0_event

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Aug 24, 2010
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#5
Did you save your APTickets and SHSH blobs using redsn0w? This guide shows how you had to do have done that for you to downgrade a non A5 device to 5.x.x. I *THINK* that JUST saving SHSH blobs without APTickets is useless. If not, I would LOVE to revert to 5.1.1, as I do have my SHSH blobs saved.
http://cydiablog.com/1186/backup-shsh-blobs-aptickets-using-redsn0w/
 

Tug

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#6
Sorry I meant to say I was using tiny umbrella and the program shows 5.1.1 was saved. thanks again. No OI don't think I saved my tickets and getting redsn0w to j/b 6.0.1 isn't working either. When I was previously j/b using 6.0.0 cydia was showing that I had 5.1.1 saved but didn't mention anything about my AP tickets or atleast not that Im aware of
 

ring0_event

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Aug 24, 2010
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#7
Unfortunately, many times when experts talk about saving SHSH blobs, they really mean saving the blobs and the APTickets. I'm no expert, and I didn't keep up myself with jailbreaking news, so I didn't save my APTickets, hence I am now stuck on 6.0.0. I did save my APTickets for 6.0.0, though this does me little good. As a result of this whole debacle, my baseband has been upgraded and my 3gs is now LOCKED. Sucks...but that's what happens when one doesn't keep up with the latest jailbreaking news, I'm afraid.

Check out this link has some info about SHSH blobs and APTickets:

3. How are blobs generated?
Blobs are only ever generated by Apple on their own servers. They can't be created any other way since they use strong encryption techniques. They cannot be forged. They cannot be changed or otherwise manipulated.

iTunes first makes a request to the Apple signing server including information such as your devices unique ID (ECID) plus the version details of IOS that you are trying to install and iTunes gets your unique blobs back as a response, but only if Apple agrees that you are allowed to install that version of IOS on your device!
Since the release of IOS5 an additional unique component known as the APTicket is also required from Apple. This component is randomly generated by something called a "nonce" (number once) from your device and is unique each time a fresh restore operation is requested.
http://www.iPhoneforums.net/forum/i.../shsh-blobs-frequently-asked-questions-19986/
 

fijiman

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Feb 13, 2011
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#8
There is NO separate option to save APTickets with tinyumbrella...you click on "Save SHSH"..everything is done automatically....!

Tug .....if you have saved your SHSH blobs you can go ahead and downgrade your firmware to 5.1.1....just use redsn0w 0.9.15b3...NO iTunes required....

PS - don't forget to backup your iPhone with iTunes before starting the downgrade...

Goodluck
 

Tug

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#9

ring0_event

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#10
There is NO separate option to save APTickets with tinyumbrella...you click on "Save SHSH"..everything is done automatically....!

Tug .....if you have saved your SHSH blobs you can go ahead and downgrade your firmware to 5.1.1....just use redsn0w 0.9.15b3...NO iTunes required....

PS - don't forget to backup your iPhone with iTunes before starting the downgrade...

Goodluck
OK, I could not downgrade from 6.00 to 5.1.1 myself, but I relied in Cydia to save my SHSH blobs. Was this my mistake?

EDIT:
More to the point, when saving SHSH blobs in TU, must I have saved them using Apple as the source, or can I have used Cydia as the source? Cydia has my 5.1.1 SHSH blobs saved, so in theory can I configure TU to acquire the SHSH blobs from Cydia, and save them to disk, and revert my 3gs on 6.0.0 to 5.1.1?
 

fijiman

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Feb 13, 2011
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#11
Believe it or not....it's easy to downgrade the firmware on your iPhone..... you have saved your SHSH blobs via Cydia....ok..... what model iPhone do you have...?
 

ring0_event

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Aug 24, 2010
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#12
I have a 3gs, new boot rom. I've tried downgrading from 6.0.0 to 5.1.1 many, many times, using redsnow, but I could never get it to work. Are you saying that TU can *at this time* save both SHSH blobs (saved on Cydia) and APTickets, so that I can successfuly downgrade to 5.1.1?
 

fijiman

Contributor
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Feb 13, 2011
832
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28
UK
#13
I have a 3gs, new boot rom. I've tried downgrading from 6.0.0 to 5.1.1 many, many times, using redsnow, but I could never get it to work. Are you saying that TU can *at this time* save both SHSH blobs (saved on Cydia) and APTickets, so that I can successfuly downgrade to 5.1.1?
Can you outline the steps you used to downgrade your firmware from 6.x.x to 5.1.1...?
 

ring0_event

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Aug 24, 2010
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#14
I had generated a firmware image file using pnage tool (preserves my baseband, lost now), and tried to restore first with iTunes, and then with redsnow. I kept on getting a 2601 error either way. I referenced by SHSH blobs using the remote option in redsnow, IIRC.

I think this summarizes the redsnow aspect:
http://www.idownloadblog.com/2012/05/11/downgrade-iphone-4s-ipad-2-new-ipad-3-redsn0w-0-9-11b/

Of course, as it was very late, and I was increasingly desperate, I probably made some bad error at some point, and finally I had to restore to 6.0.0, where I have been marooned ever since.

Do you believe it's possible for me to restore to 5.1.1 now? Cydia has my SHSH blobs saved.

NOTE: I used redsnow version 0.9.15b2. It seems there has been a fix...(yes I'm on Windows)
Update #2 (Nov 1): Version 0.9.15b3 fixes the redsn0w “error 2601” that Windows users were seeing using the Restore button. It also fixes a related Windows iTunes error 14 for stitched files. Note that if you have a baseband, you should probably avoid stitching and simply use redsn0w’s native Restore (not iTunes).