Author Topic: Downgrading iPhone 3G to iOS 3.X WITHOUT SHSH Blobs  (Read 2032 times)

Offline U1G

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Downgrading iPhone 3G to iOS 3.X WITHOUT SHSH Blobs
« on: February 10, 2011, 10:30:28 PM »
I cried when I seen this.. but not really. This is a full tutorial on how to restore your iPhone 3G to any 3.X frimware without SHSH blobs, How to Jailbreak it, And have custom boot logos and how to unlock.

The author is also providing LIVE walk through, just add him on one of his emails and he will help!

Here's the link: http://www.sinfuliphone.com/showthread.php?t=46799

Thanks to Fwb2700

Offline Rekoil

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Re: Downgrading iPhone 3G to iOS 3.X WITHOUT SHSH Blobs
« Reply #1 on: February 11, 2011, 08:22:26 AM »
The 3G doesn't require SHSH blobs to accept a firmware. It contains the hardware, but the bootrom isn't locked down in the same way as the 3GS, which means, that in order to verify a restore all you'd need to do is install an earlier version of iTunes that doesn't care about SHSH blobs. Restoring in DFU mode might work as well, not sure.
32gb factory unlocked iPhone 3GS with early bootrom and shsh for all available firmwares
others: 16gb iPhone 3G, 16gb iPhone 2G, 8gb iPod touch 1G, 16gb iPod touch 1G, aTV2

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Offline eyoon

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Re: Downgrading iPhone 3G to iOS 3.X WITHOUT SHSH Blobs
« Reply #2 on: March 21, 2011, 02:30:32 AM »
The 3G doesn't require SHSH blobs to accept a firmware. It contains the hardware, but the bootrom isn't locked down in the same way as the 3GS, which means, that in order to verify a restore all you'd need to do is install an earlier version of iTunes that doesn't care about SHSH blobs. Restoring in DFU mode might work as well, not sure.
BUT you also need to kick out of recovery mode using TU

Offline Neonkoala

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Re: Downgrading iPhone 3G to iOS 3.X WITHOUT SHSH Blobs
« Reply #3 on: March 21, 2011, 11:49:52 PM »
Just to clarify, restoring 4.0 -> 4.1 in iTunes won't work as there are 'soft' SHSH introduced alongside iOS 4.0 for older devices. It's easy to get around either using saved blobs and TSS server or placing the iPhone into 'pwned' DFU mode first.
iPhone 3G | iPhone 4