I want to go to a 4.3.5 os. Is there anyway I can perseve my 3.10 bb? I had 4.2.1 with gp, but I hit erase all content and settings, and now its stuck in a loop, I dont have the shsh blobs. Can someone tell me exactly what I need to do before updating to this tethered jb. I want to be able to unlock it. Thanks.