My iPhone was previously unlocked using the 1.4 software however i mistakenly updated to 2.1 and im having a frustrating time unlocking the thing again. I am on Mac 10.5.5, using PwnageTool 2.1, and have a 2g 4gb iPhone. When going through the process, Pwnage asks me to find bootloader 3.9. I've downloaded from several sources, none of them seem to work. I get the message "Sorry, but that does not appear to be the proper file. Would you like to browse for Bootloader V3.9 file again?" What am i doing wrong? Im going on an international trip in a couple days and i would appreciate help.