Please help me. I'm totally confused.
I've been reading lots of posts on different forums and on twitter.
I have a 3GS running 3.1.3 with SpiritJB. It also have the Old Bootrom. I'm using Windows 7 based PC.
Is there anyway for me to get iOS4 on my device and JB it? I only have SHSH for 3.1.3.