So it seems like iOS4.2.1 untethered for iPhone 4 is going to require 4.2b3 blobs. I have a new iPhone 4 so it has no blobs saved and it is on 4.1. I can't wait any longer so I've decided to jailbreak 4.1 and use it. My iPhone 4 is 4.1 but I want to format it at 4.1 so I can start fresh and jb it. Now if I use iTunes I can only update it to 4.2.1. Is there any way I can restore 4.1? Shift-restore work? Thanks.