I had problems with 1.3.5 and attempted to reset to 1.3.1 using web os doctor. Web os doctor "was unable to reset the phone" and now I am left with a phone that does not even turn on. when i attempt to turn it on, i get the "!" message. I attempted to use the usb mode trick and the same thing occured. I would really appreciate any help, i do not have the protection plan and bought the phone a week or so after it came out.