"won't recognize" meaning when I plug my phone into my PC via USB and put the phone into MTP, my phone is not in my windows explorer. Still having this problem, but it has moved on to my home computer(Windows 7 Home Premium 64bit OS) as well. What is very weird is that if I put my phone into PTP, my computer recognizes it immediately. I am trying to root my phone so that I can flash the email app hack. I am very experienced in rooting, but I have never had such trouble getting 2 pieces of hardware to communicate.