If you are currently sitting on iOS 10.1.1, then we highly recommend not jailbreaking your device immediately. The KPP technique Luca used in current Yalu + Mach_Portal jailbreak for iOS 10.0.x to 10.1.1 is still vulnerable in iOS 10.2, but that alone isn’t enough to achieve the full jailbreak in iOS 10.2. There is a lot that can go wrong, even forcing you to restore your device to iOS 10.2, given you are stuck in a boot loop or something. It is likely that the Pangu Team may pick up on his progress made on iOS 10.2 to hopefully produce a fully functionality public jailbreak. There’s some progress made there already and hopefully it’s only a matter of time before someone picks up on the work he has left off on iOS 10.2 to create a full jailbreak. Well, those who care about jailbreaking should save their SHSH2 blobs for iOS 10.2 right now. Here’s how to save SHSH2 blobs for Prometheus upgrade or downgrade on unsigned iOS firmware using TSS Saver.

How to save SHSH2 blobs for iOS 10.2

Tihmstar (iOS developer) is releasing a new tool called Prometheus capable of doing downgrade or upgrade to a version of iOS which is no longer being signed by Apple. The developer has already released a companion tool called tsschecker which basically lets you save .shsh2 blobs required for downgrading/upgrading purposes. A new online tool aptly named TSS Saver by 1Conan basically makes the whole saving of .shsh2 blobs situation a lot more user friendly. Below are the steps to do the thing

  1. First of all you’re going to need your device’s ECID number, a USB cable and iTunes to do this.
  2. Connect your device with PC using USB cable and launch iTunes.
  3. Click on the Summary tab and then locate the Serial Number on the right-hand pane. Click on the Serial Number until you see ECID.
  4. Next, Right-click on the ECID and copy it directly to the clipboard. Note: TSS Saver requires the ECID to be provided as hexadecimal value for it to be accepted. If you have the ECID as a decimal value, and need it to be hexadecimal, then you can convert it using any of the many online conversion tools available on web.
  5. You also need device’s identifier, which you can find using same process as above by clicking on Serial Number until it shows Model Identifier.
  6. Once you have both ECID in hexadecimal and Model Identifier, head over to the following URL to access TSS Saver: tsssaver.1conan.com.
  7. Where it asks for it, paste in the hexadecimal ECID that you managed to extract earlier.
  8. Make sure that you select your correct device type and model number as found earlier under the Identifier section.
  9. With all the required information entered, make sure you tick the “I’m not a robot” check before proceeding.
  10. Now hit the Submit button, and hopefully the online tool should do all of the heavy lifting for you and shoot off to capture and save the .shsh2 blobs on your behalf for all firmware versions that are currently being signed by Apple. It will then take you directly to a results page which will give you access to the saved blobs for downloading. In case you lost the URL, you can simply head over to the tool’s website and enter the hexadecimal ECID in the Lost your link? section and hit the Get your blobs button to grab the .shsh2 blobs. That was all, if you have any queries please reach us via comment section below, Thanks!