20 - 30 minutos
Phone was cutting out...even when Battery was at 90%. Constantly tethered to power cable.
I took my time...I mean really took my time, read the instructions over and over...I don't have the budget to go out and get another iphone if I screwed this up. So I followed the directions and was stoked when my phone came back on...Yeah for me!!!
Work slowly the first time...you can do this!!