I know it has been a lot of work to wite in all posts about tutorials and lot of info about making custom firmwares, or faking apple server via tinytss, with all the work I have seen and tried all possibilities I tell you that is waste of time, and belive me is not possible yet to do any changes to your iPhone unless upgrate or Restore to iPhone2,1_3.1.3_7E18, U try making any changes to this firmware via PwnageTool, redsn0w will be again waste of time, won't work just original firmware on all models, I tried new boot rom, old, 1st, 2nd, and so on generation and same ****, there is a serious exploit that can not be ignored or bypassed with any tools that we know so far.