Hello, I'm currently in the search for a method that allows me to downgrade from 4.2 to 4.0. But it doesn't seem to be possible without pre-saved SHSH blobs. Seeing as I didn't collect these blobs at the time, I struggle to find a method around this.
Can anyone confirm that the only way to downgrade is by having saved the SHSH-blobs?
If not, would a custom fw of 4.0 work? I'm getting all these 1600-errors. Would iReb fix this for me?
Thanks in advance