iOS 3.1.3 downgrade

I upgraded my newer model iPod Touch 2g (one of the MC models) to iOS 4 and I'm not exactly happy about it. It's not bad, I just want 3.1.3 back. I saved the original restore file from ~/library/iTunes/iPod Software Updates before I upgraded so it wouldn't be deleted by iTunes.

Now here comes the problem. I go to my iPod Touch in iTunes, and I option+click restore, then I select my 3.1.3 firmware, and start the process. iTunes puts the iPod into whatever special mode it uses and then I get an error, that "The iPod "iPod" cannot be restored. This device is not eligible for the requested build." Then it leaves my iPod in recovery mode, to which I can only restore iOS 4.

Now I know this works because I've used it before iOS 4 came out. Does anyone know how to get around this problem?

EDIT: iTunes let me view the log file when asking if I could send the failure information to Apple. Here's what it gave me.

2010-06-23 00:59:23.000 iTunes[909:207]: restore library built Jun 4 2010 at 01:46:12
2010-06-23 00:59:23.000 iTunes[909:207]: iTunes: iTunes 9.2
2010-06-23 00:59:23.000 iTunes[909:207]: iTunes: Software payload version: 7E18 (option key)
2010-06-23 00:59:23.000 iTunes[909:12d0b]: iTunes: Specifying UOI boot image
2010-06-23 00:59:23.000 iTunes[909:12d0b]: requested restore behavior: Erase
2010-06-23 00:59:23.000 iTunes[909:12d0b]: amai: AMAuthInstallPlatformCreateBufferFromNativeFilePath: open failed: No such file or directory
2010-06-23 00:59:23.000 iTunes[909:12d0b]: amai: AMAuthInstallHttpMessageSendSync: httpRequest=<CFHTTPMessage 0x119da480>{url = http://gs.apple.com:80/TSS/controller?action=2; request = POST /TSS/controller?action=2 HTTP/1.1}
2010-06-23 01:00:25.000 iTunes[909:12d0b]: amai: tss submitjob: error from server=94 (This device isn't eligible for the requested build.)
2010-06-23 01:00:25.000 iTunes[909:12d0b]: amai: kAMAuthInstallRequestCacheLocalizedTssError: cached server error text: (3194) This device isn't eligible for the requested build.
2010-06-23 01:00:25.000 iTunes[909:12d0b]: amai: AMAuthInstallRequestSendSync: failed tss submission: This device isn't eligible for the requested build.
2010-06-23 01:00:25.000 iTunes[909:12d0b]: amai: AMAuthInstallBundlePersonalizePartial: server request error: This device isn't eligible for the requested build.
2010-06-23 01:00:25.000 iTunes[909:12d0b]: failed to personalize the restore bundle: This device isn't eligible for the requested build.
2010-06-23 01:00:25.000 iTunes[909:12d0b]: AMRAuthInstallDeletePersonalizedBundle
2010-06-23 01:00:25.000 iTunes[909:12d0b]: removed personalized bundle
2010-06-23 01:00:25.000 iTunes[909:12d0b]: AMRecoveryModeDeviceCopyAuthInstallPreflightOptions: failed to personalize bundle
2010-06-23 01:00:25.000 iTunes[909:207]: iTunes: Restore error 3194

Edited to include the log readout.

iPod Touch 2g (late model), iOS 4

Posted on Jun 22, 2010 11:03 PM

18 replies

Jratz91 Author

Level 1

45 points

Jul 6, 2010 9:52 PM in response to Gmalia

Then why is it possible for us all to go to 3.1.2, which I did successfully? It seems strange that Apple would block 3.1.3 but 3.1.2 works just fine.

hmalisa

Level 1

10 points

Jul 11, 2010 4:14 PM in response to Zabimaru

Hi Zabimaru,

I just read your post, downloaded the 3.1.2 firmware for my iPhone 3GS, and tried to restore it by pressing Command-Option and the Restore button in iTunes.
But I still get the "This device isn't eligible... " error, like with 3.1.3.
Can you please explain to me in detail how you managed to go back to 3.1.2?

Zabimaru

Level 1

0 points

Jul 15, 2010 7:46 AM in response to hmalisa

Hi Hmalisa,

I basically followed this: http://www.redmondpie.com/downgrade-ios-4-iphone-3gs-3g-and-ipod-touch-to-iphone -3.1.3-3.1.2-how-to-guide/

But I didn't get it to work initially with 3.1.2 until I used another computer that I installed itunes on. I still can't get 3.1.3.
If you need the firmware get it here: http://www.felixbruns.de/iPod/firmware/

Remember I have an ipod 2nd Gen 8GB not an iphone but you should still get it to work if you follow that link.

Best of luck

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iOS 3.1.3 downgrade