i understand that, but to borrow it you have to install it without being a licensee. Moto makes each person wanting a copy of their software sign an agreement and purchase it, whether you need to program 1 radio or 1000. see the problem?
you may get lucky and find a local guy who has it and would go by your location or let you run the radios to him. cables/ribs/etc cost too much to just blindly ship out to someone, even with the legality of "borrowing software" aside.
me personally, i think M should make all software for unsupported models free. but it will never happen as even if they were to have a compasionate moment and be so inclined the FCC NB rules say the end user cannot have a means to revert to WB once the NB conversion is done. if the software became legally obtainable that would make it impossible!
