Desktop Manager: Bold 9720 identified as Unknown Device

Desktop Software v7.1.0.41 (Bundle 42) has no problem connecting to BB 8830 and 9320 but identifies 9720 as "unknown device". The PIN is actually recognized but Backup and Restore buttons are grayed out:

https://i.postimg.cc/RZNF5F4k/DM-9720-a.png

https://i.postimg.cc/T3FPR6Pp/DM-9720-b.png

https://i.postimg.cc/nLmhrPsT/DM-9720-c.png

Is there any solution to this?

Windows OS: XP 32-bit
BB Desktop Software v7.1.0.41 (Bundle 42)
Installer: 710_b042_multilanguage.exe
Download link:

https://www.blackberry.com/us/en/sup...ware-downloads

https://swdownloads.blackberry.com/D...247A852FAD3647

BB 9720 is the last BBOS device and was released in August of 2013, a few months after the release of Q10 and Z10. It seems that by then all DM updates had been discontinued and BB 9720 was left out unsupported. At this point it is just speculation but an image file of 9720 missing in Device folder and no mention of 9720 in DeviceCharacteristics.xml (in the same folder) seem to confirm this:

https://i.postimg.cc/KjkM9zKD/DM-9720-f.png