I got an iPod Touch 2G 8GB MC a year ago that came with 3.1.2. Now to my understanding, the 2G MC never needed SHSH blobs to downgrade. So I went up to 3.1.3, and now I'm on 4.0. If I ever wanted to go back to 3.1.2 or 3.1.3, am I able to by doing a restore just by pointing to the IPSW? Also, I got an iPad that came with 3.2.2. So for this device, I have to use the program, "Tiny Umbrella" to "Save SHSH"? And when I do that, I should be able to downgrade to 3.2.2 forever? And are these SHSH blobs stored locally, so if I format, I loose them? Or must I back them up from my computer, or are they locally on the iPad somewhere?