I bought a new iphone 3gs. Lucky enough it comes with 3.1.2 with new iboot. I have jb and the cydia server stated my ecid shsh 3.1.3 is on their server. Now i wonder why the ecid shsh is 3.1.3 but not 3.1.2 since i am running on 3.1.2. for some reasons it was stuck on boot logo and i had to restore it to the 3.1.3 ! Can i down grade to 3.1.2 from 3.1.3 With Cydia SHSH?