I have an iPhone 3G running 4.2.1 (5.15.04 Baseband) that I am trying to jailbreak and unlock for a friend of mine so he can sell it. I am trying to use Redsnow 0.9.65b which is what I *thought* was the proper way to go. I also downloaded iPSW iPad1,1_3.2.2_7B500 which I also read was required for phones that were on the 5.15 baseband. When I attempt to run the jailbreak it won't go thru at all. Afterr following the prompts for launching the phone into DFU mode I just get a "error" and the phone goes dead (it will power back on). Any advice as to what may be the issue and/or alternative ways to accomplish this?