I am trying to fix a 3GS here and I cannot update it to anything besides 5.1. The client wants iOS 6, but iOS 5.1.1 would be OK too. But Redsn0w and snowbreeze want blobs to these firmwares. Has apple stopped signing 6.1.2 already? I don't have the blobs to anything except 4.1 and 5.1. How do I go about updating without blobs?