Apple is Now Doing Soft SHSH Blob Checks

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Posted July 19, 2010 at 7:58pm by Shalom Levytam

Starting with iOS 4.x, Apple began performing soft SHSH blob checks for older iDevices. This means that like the 3GS and the iPhone 4, if iTunes can’t get your blobs (due to signing window being closed), the iTunes restore will error out. Therefore, Cydia is now saving SHSH blobs for older devices too. Fortunately, since it is a soft SHSH blob check, it can easily be bypassed by using redsn0w or PwnageTool.

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.

[Wiki]

Apple is Now Doing Soft SHSH Blob Checks

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MS - July 20, 2010 at 9:51am

this is BS* i just restore my wife 3g (my old device) to 3.1.2 , 3.1.3 and to 4.0 to check if this is true, and all i see is BS* talking here....i don't have any SHSH blobs saved on this 3g and it restores without problems.. only my 3gs is giving me this kind of Error when i downgrade and it gets stuck on recovery loop, but i just use RecBoot and it's all good again... So plz calm down :) and Moderators, u should kick out impersonators :)

s garcia - July 20, 2010 at 11:54am

Hey MS, I tried like hell to restore to 3.1.2 on my 3g and got this error......... it could be an error on my part but I was unable to downgrade.

MS - July 20, 2010 at 3:12pm

Make sure u have a copy of the ipsw u trying restoring in : C:/Users/(your user name)/AppData/Roaming/Apple Computer/iTunes/iPhone Software Updates :) and make sure u have libusb propper installed :) it works fine on my win 7 ultimate 64-bit.

SGarcia - July 20, 2010 at 3:24pm

I too have W7 64bit. I think my problem was understanding the libusb part. I just couldn't find a good tutorial.

MS - July 20, 2010 at 3:47pm

Ye it's a bit tricky on 64-bit, but uninstall if u have it installed atm and follow this tutorial http://www.youtube.com/watch?v=oABVOajGfW8 it's for vista but it worked for me :) hope it helps :)

Jay - July 20, 2010 at 7:31am

For all the folks complaining on this site, your phone would work the same as a jailbroken phone if you..... Waaaaaaaaiiiiiiiit foooooorrr iiiiiiitttt... Actually bought the apps. I mean, just sayin.'

Haha - July 20, 2010 at 4:14pm

Not saying that ppl shouldn't pay for apps, but just pointing out that jailbreaking makes for a lot more possibilities than just getting any AppStore app for free. Themes, ssh, bitesms, sbsettings, etc are definitely not in the AppStore

Jay - July 20, 2010 at 6:06pm

I feel you bro. Benefits to me are tethering, mywi, and hopefully 3G unrestrictor for FaceTime. Others use it to a max benefit of course. Still doesn't warrant people complaining about something they'll be getting for free w/ almost endless possibilities.

Rob - July 20, 2010 at 4:37am

It's time for me to buy an android. Antenna issues, no flash, to much effort to jailbreak now! Enough is enough, there's a reason why it's outselling the iPhone

Noman - July 20, 2010 at 4:59am

There's lots of reasons why Androids are outselling iPhones but it's none of the ones that you wrote. How about, there's shit loads of different android devices at different price points where as there's only ONE iPhone released a year at a fixed premium price point.

liv - July 20, 2010 at 8:53am

no flash? hahahaha please go to Android....seriously you don't know half the stuff you wrote.

Steve jobs - July 20, 2010 at 3:01am

Yes you cannot restore a jailbroken Iphone anymore.

APPLE ***** - July 20, 2010 at 4:12am

Here we go people.... this steve Job dude iis startin another story..... no restore for jailbroken iphone lolzzzzzz

i2be - July 19, 2010 at 9:20pm

Does it mean we might no longer restore jailbroken iphone?

Jay - July 19, 2010 at 9:01pm

as i check these posts everyday, i wish i knew what the hell this all meant lol.

Junito - July 19, 2010 at 8:26pm

Did apple did something, i cant restore my 3gs to 3.1.3 i got blobs and the host are fine!!!!!! i need help i got "Iphone could not connect to server at this time" WTF

MuscleNerd_ - July 19, 2010 at 8:16pm

Get your blobs before is too late

JB - July 19, 2010 at 8:19pm

REALEASE THE JB BEFORE ITS TOO LATE!!!

MuscleNerd_ - July 19, 2010 at 8:21pm

ask comex... we are not working on jailbreak

il0vesn0w - July 19, 2010 at 8:23pm

thx musclenerd.....@JB why dont you create your own so you dont have to wait...

vkaif - July 19, 2010 at 8:44pm

I simply no getting it. Who cares about unlock if it is useless without JB. It is not that I do not appreciate all the hard and genius work guys do, but its progress and final results are USELESS to community and is just a tease ...

Haha - July 19, 2010 at 9:03pm

Just understand that it's not just one person working on everything. Just so happens that the " unlock ppl " got their job almost done first. That's all it is. Yea we cant use it til comex is done, but so what? They told us because they want us to be updated on whats going on. Be patient. I'm cheering for comex, without any bitching :)