Dev Team: Apple Has Started ‘Soft’ SHSH Blob Checks With iOS 4

News | Wednesday July 14 2010 1:54 AM | Comments (0) Tags: , , , , , , ,

3G and iPod Touch 2G.
Those of you with jailbroken iPhone 3G and ipt2G devices may now have noticed Cydia starting to save your SHSH blobs too, just like it does for iPhone 3GS, ipt3G and later devices. That’s because starting with 4.0, Apple started putting a “soft” SHSH blob check in the firmware. The SHSH blob check is very real in the sense that if iTunes can’t get your blobs (because the Apple signing window has closed), the iTunes restore will error out. But it’s “soft” in the sense that those devices can always use redsn0w or PwnageTool to get past the error (the bootroms themselves for those devices don’t require blobs to be in the firmware files, unlike the newer bootroms).
So, Cydia is doing this to allow you to continue to use iTunes to restore to 4.x on iPhone 3G and ipt2g outside of Apple ’s signing window without needing to use redsn0w or PwnageTool to get around Apple ’s annoying new restriction.
So if you were wondering why Cydia has started storing SHSH blobs for your iPhone 3G or iPod Touch 2G, this should answer the question.

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