once you run blackra1n, there will be a blackra1n icon on your iphone, click on it, once inside you have the option to install cydia (which is basically a new appstore). There are 2 other "appstore" programs in blackra1n but only install cydia. after you install cydia you can delete blackra1n by chosing delete once your inside the program. No drivers needed, iphone just needs to be plugged in and recognized by itunes, and run the blackra1n program that you downloaded on your computer.
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