1.) First download this required archive: click here 2.) Extract the archive to the root of your hard drive, should be C:/DFU/ 3.) Connect your iPhone and ignore iTunes 4.) Go to: Start - run 5.) Next type in “c:/dfu/dfu iBSS.m68ap.RELEASE.dfu” 6.) Wait for iPhone to show a “white” screen. Now you are in DFU mode... Credits to Dejawoo from ModmyI for the archive.