How do you enter DFU mode on an iPhone 4?
pcaulfield 1 year ago
I experienced a problem updating my iPhone 4 using iTunes. I had the same problem in the past with a 3GS, and was able to correct it by entering DFU mode (which I remember because I thought it meant Don't Mess Up, or something along those lines). What I don't recall is how you do it. Anyone know how to enter DFU mode?
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