iOS 27.0.1 is still signed, three days after iOS 27.2 shipped. That window will close without warning, and when it does, one option disappears forever: the chance to save SHSH2 blobs for the version Calif jailbroke in Paris. Saving them takes a few minutes, costs nothing, and can only be done while Apple is still signing. Here is what blobs are, how to save them, and what they honestly cannot do.
What an SHSH2 blob actually is
Every time an iPhone restores firmware, Apple must sign off on that exact version for that exact phone. An SHSH2 blob is that sign-off, captured as a small file. It is tied to your phone’s hardware identifiers and to one specific firmware build, so a blob saved for iOS 27.0.1 on your iPhone 18 Pro is useless on any other phone and for any other version. The critical detail is timing: Apple only issues these signatures while a version is signed. Once the window closes, no tool can go back and generate a blob for it later.
That is why the signing news matters even if you already updated. You do not need to be running iOS 27.0.1 to save its blobs. You only need your phone’s identifiers and a version that is still signed. Readers who moved to iOS 27.2 on day one can still save 27.0.1 blobs today, as long as the window holds.
Save blobs with blobsaver, the simplest route
Blobsaver is a free, cross-platform app that does the fiddly parts for you. Download it from its official GitHub repository, install it on a Mac or PC, and connect your iPhone with a cable. Click “Read from connected device” and blobsaver will briefly put the phone into recovery mode to fetch its unique ECID, ApNonce, and generator values, then bring it straight back. Select the signed versions you want, iOS 27.0.1 for most iPhones and iOS 27.1 for the iPhone Duo, choose a folder on your computer, and click Save. The result is a set of .shsh2 files, one per version.
If you would rather not install software, the TSS Saver website offers the same result through a form. Find your ECID in Finder on a Mac or iTunes on Windows, enter it along with your exact device model, submit, and download the resulting blob file. Whichever route you take, double-check the ECID character by character. A blob saved with a wrong ECID is a blob for nobody.
Store the files like they matter, because they might
Put the .shsh2 files somewhere you will still find them in a year. A dedicated folder on your computer, plus a copy in cloud storage or on an external drive, is the minimum. Open one file in a text editor to confirm it is not empty or corrupted. Blobs are tiny, they do not expire, and there is no reason to keep only one copy. The people who regret saving blobs are rare. The people who regret not saving them, after a window closes, are common.
What blobs cannot promise you
This is the part most guides rush past, so here it is plainly. A saved blob is not a jailbreak, and it is not a guaranteed downgrade. Restoring unsigned firmware with a tool like futurerestore also requires Apple’s Secure Enclave and baseband components to be compatible between the target firmware and a currently signed version, and community reports note that futurerestore has been unreliable on modern, Cryptex-era devices. Saving blobs and using them are two different problems, and the second one may not be solved for your device when you need it.
None of that is a reason to skip saving them. It is a reason to keep expectations honest. A blob preserves an option at zero cost. It does not create a tool, it does not bypass Apple’s boot chain checks on its own, and it does not change the fact that no public iOS 27 jailbreak tool exists today. Anyone selling you a blob, a downgrade service, or a jailbreak download is running a scam of the kind we detailed in our scam guide.
The window for iOS 27.0.1 is on day three, and our daily signing checks will report the day it closes. Saving blobs today takes minutes. After the window closes, it takes a time machine. Do it now, file the .shsh2 files away, and then get on with the actual decision, whether that is staying on 27.0.1 or installing 27.2, with one more option preserved either way.
