Okay, so. Went into 1.1.1 and then jailbroke. Added the source for Oktoprep. Upgraded to 1.1.2 and jailbroke. Then used the iJailbreak method to jailbreak, it all seems to work at the start, but after like 5 minutes, my installer just stops working. It will get to the end of installing packages, and then the screen just goes black and then straight to my springboard. Any ideas?