The backup files are of a proprietary format, intended solely as the source of data for restore to a BB. As such, they are not human-readable on the computer. But, there are plenty of 3rd party computer apps out there that can parse and present the data to you in a human readable format...search (e.g., Google) and ye shall find, I am sure.
Occam's Razor nearly always applies when troubleshooting technology issues!
New to the Community? Click here and also here for helpful guidance. Also please click here for additional helpful information to guide you as you proceed. I always recommend that you treat your BlackBerry like any other computing device, including using a regular backup schedule...click here for an article with instructions. If anyone has been helpful to you, please show your appreciation by clicking the button. Need a reference to BB10 OS/SR versions? Click here. Need a specific BB10 AutoLoader? Send me a private message.