Ok, so ive been reading and trying to decide/figure out what course of action i should take. I'm currently jbroken on 3.1.2. I have a 2nd gen mb model, 16 gig. Correct me if im wrong but in order to upgrade, i would have to have my shsh blobs saved, correct? On cydia i said yes to save and now it says along the top: This device has its SHSHs on file for iphone os 4.0. Now does that mean that i DONT have to save my 3.1.2 blobs or do I? And the purpose of saving is for just in case I want to downgrade? Also I've read that the 2gen wont get all the features of 4.0, but I also read that if you do some playlist editing you can get all features except for camera of course. Is that right? Or would waiting for comex jailbreak be the best/easiest thing to do? DZL1.