Root ICS Update Help? Busybox Troubles


Ok I'm stock, uninstalled safestrap and unfroze everything (as well as updated it all too). I have been told that I have to use the ics fastboot files and flash them or flash to stock GB .219. How can I do this without using a computer, since I only have a mac (unless I can do it using the Droid 4 Utility)??? PLEASE HELP, I'm itching to get some ics goodness on my Droid, but I need your help to do it!!:eek: