Dev Team: Apple Begin to Set Soft SHSH Blob Checks For iOS4 and Higher Firmwares

Apple has just set on integrating ‘soft’ SHSH blob checkers in the iOS4 and advanced firmwares. This news is just released by iPhone Dev Team. If SHSH blobs aren’t successfully got by iTunes for iPhone 3G and iPod touch 2G just like in the case of iPhone 4 and iPhone 3GS then iTunes restore will generate an error.

iPhone Dev Team also stated that, soft SHSH blob verifier can be easily avoided by using Pwnage Tool and Redsn0w. Saving the SHSH blobs for iPhone 3G and iPod Touch 2G has also started by Cydia.

Dev Team reports:

Those of you with jailbroken iPhone3G and ipt2G devices may now have noticed Cydia starting to save your SHSH blobs too, just like it does for iPhone3GS, 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 iPhone3G and ipt2g outside of Apple’s signing window without needing to use redsn0w or PwnageTool to get around Apple’s annoying new restriction.

According to iPhonehacks this is well enough answer, if you have a question in your mind, Cydia has started storing SHSH blobs for your iPhone 3G or iPod Touch 2G.