[Donatom3]

Pull your battery out to turn your phone off then put it back in "and you need to hold power, volume down, AND the "<-" button (the button just above end call) it is confirmed that the back button is required for flashing from the internal storage.

at this point once you have all of those buttons pressed, you need to do the magical dance to figure out how to press the stylus into the soft reset hole.
(as an alternative you can completely power off the phone, then hold backspace and volume and while holding those press and hold power till the bootloader pops up)"

You will get the tri color screen, now you can plug in your usb it shoudl change from serial to usb at the bottom of the screen and you can update your rom on your computer again.