hi everyone!!! i have 3 iphone 3gs 32gb on my hand right now running version 3.1.3 which i cant use for tmobile. and i would like to try hardware unlock it. i did got into the point where i took out the little chip fom the iphone. but how can i download the file on it what kind of machine do i need to do the work? and how can i reprogram the chip. PLEASE HELP OUT