With the release of iOS 6 this afternoon, we have some good news for all of you jailbreakers out there. Two days ago developer NotCom announced that he has updated the utility TinyUmbrella, the program allowing users to save their device’s SHSH blobs. If you use TinyUmbrella, be sure to update to v6.00.00b as NotCom has added extended support for Apple TV on iOS 5.0.2 and iOS 6 (on all other devices to include beta versions as well).
In the jailbreak community, terms like SHSH blobs and TinyUmbrella are common. But for those of you that are unfamiliar with these terms, we will get into a little further detail. An SHSH blob (Signature HaSH blobs) is a signature file, used against the Apple server to downgrade any idevice to an earlier version of iOS. As an example, if you have been running iOS 5.1.1 with a jailbreak and updated to iOS 6, commonly you are required to wait until the developer teams come up with the latest jailbreak. This is because the user has not saved their SHSH blobs thus not being able to regress in their operating system.
If you do in fact decide to upgrade your device to iOS 6, not only should you be prepared to lose your jailbreak for a while, but you should also download TinyUmbrella and save your SHSH blobs. Upon saving these blobs, TinyUmbrella will assist in downgrading back to 5.1.1 or any earlier ipsw that you prefer. In his blog, NotCom states:
I’ve updated TU for apple tv 5.0.2 (sorry for the wait!) as well as all of the iOS 6 betas. I’ve had to change the way the OSX app is packaged.
Furthermore, he goes on to say:
So now it is a simple zip but you will have to give your admin password at the first launch
Here is a Step-By-Step to save current and future SHSH blobs:
Step 1: Download TinyUmbrella v6.00.00b.
Step 2: Connect the device to a PC or Mac via USB.
Step 3: Double click on the “.dmg” file to mount it and drag the Umbrella app from the mounted dmg into your Applications folder. After that, double click the Umbrella app to launch it.
Step 4: Enter administrative username and password. TinyUmbrella will then detect the type of device and its firmware.
Step 5: Click the “Advanced” tab and uncheck “Set Hosts to Cydia on Exit” and “Request SHSH from Cydia”.
Step 6: Now hit the “Save SHSH” button.
At this point, you should check for any new entries in the Saved SHSH iPhone list. If the file you see is somewhere between 60kb-65kb, you should have completed the process successfully.