just a small blog for my experiments.
This is just a simple write up on downgrading 32 bit devices that are *currently* vulnerable to the checkm8 exploit. Theoretically, this method works on all 32 bit devices from A5-A6X, but only specific devices have checkm8 implemented at the moment. That will likely change in the future, as the A5 bootrom is being worked on.
Before beginning, this is a reminder that this is not a method of downgrading without shsh2 blobs. If you missed the signing of the 13.5 and never saved blobs, then you're out of luck. This method also does not work on devices not vulnerable to the checkm8 bootrom exploit. The oldest phone this method supports is the iPhone 6S, and...
A lot of links are broken for jailbreaking iPhone OS 3.1.3 for the iPod Touch 1st Generation and the iPhone 2G. Here are some updated links for redsn0w and IPSWs for the iPod Touch. I also included instructions with screenshots on how to properly use redsn0w.
This is a short post showcasing the iBoot exploit on iOS 7.x. With the iBoot exploit, you can pass -v in order to verbose boot untethered.