Thank you for re-posting this tool.
I am trying to go back to stock 4.4 to get the OTA (I have a Dev Ed VZN Moto X). I followed the on screen directions and downloaded the VZN 4.4 file (640 MB file). Then the phone reboots to bootloader (ReadWriteMode is 0). I press ENTER since the device has booted into FB mode and it says USB connected, the ReadWriteMode reads error: device not found (I did not unplug the phone from the computer).
Is there a fix for it? The same thing happens when I try to download 4.4.2.