TSSChecker is a new tool released by developer tihmstar that allows you to save SHSH blobs of a beta version for your iPhone or iPad (iOS 10 as of writing this post).
What’s the point of saving blobs you asked? Well, if you have a jailbroken iOS device, having your SHSH blobs saved will give you the ability to downgrade back to the previous firmware just in case you accidentally upgrade to a newer iOS version which isn’t jailbreable yet.
But let’s be realistic here, most of us are tired of waiting for the new jailbreak tool to come out. Furthermore, I’m most frustrated with all the teasing that developers are doing to us via Twitter and YouTube. But according to the creator of TSSChecker, saving your iOS 10 beta blobs “Could be important in future, especially for SEPOS”.
So, let’s go ahead and get started.
How to Save iOS Firmware Beta Blobs
Before we begin, there are some materials you need to download.
After that, see the instructions below.
Step 1: When your iOS 10 IPSW is done downloading, change its extension to .ZIP and unzip it.
Step 2: You should see a file called BuildManifest.plist
Step 3: Create a folder name TSS and drop both TSS Checker and the BuildManifest files in there
Step 4: Open Terminal and type in: cd (grab and drop your folder in step 3) then press return
Step 5: Copy and paste this: ./tsschecker -d device model -s -e device ECID# -m BuildManifest.plist
Step 6: Again, press return
Device model should look like example
##iPhone7,2 no space between the device or model number