I am trying to create my jailbroken and unlocked image, and I cannot get past the bootloader selection. I get the following error message: 'Sorry, but that doesn't appear to be the proper file. Would you like to browse for bootloader v3.9 file again?' I have a first generation iPhone restored to factory settings with the 2.1 firmware. I have no idea which bootloader files I need, but I downloaded from several tutorial links. Any suggestion would be highly appreciate it... Thanks a lot. Martin.