The backup is from 2010 and may not work on the latest desktop or Link software. There are various methods to open the file and at least get the information for use on another phone.
this is one I found. They offer a free conversion. I have not used the software so read instructions before you do anything,
https://www.blackberryconverter.com/
a second one
https://sourceforge.net/projects/bb-contact-extr/