Future Downgrade to Installed Firmware

[le9508]

I have an iPhone 6 currently on iOS 10.3.3. I'd like to update it to iOS 12 to try it out, but I'm afraid that if I upgrade, I won't be able to revert back to the older version I have installed right now.

I know you need SHSH2 blobs to be able to downgrade in general, but I am wondering if there is any way I can save the 10.3.3 blobs for my device even though Apple stopped signing them a long time ago.

Maybe there is a jailbreak tweak available that would allow me to revert back to an older version of iOS after the fact?

I would appreciate any suggestions you guys have!

 

[chrfr]

I have an iPhone 6 currently on iOS 10.3.3. I'd like to update it to iOS 12 to try it out, but I'm afraid that if I upgrade, I won't be able to revert back to the older version I have installed right now.

I know you need SHSH2 blobs to be able to downgrade in general, but I am wondering if there is any way I can save the 10.3.3 blobs for my device even though Apple stopped signing them a long time ago.

You will not be able to go back to 10.3.3 if you upgrade.