You could check the firmware on your SBT, but the firmware hasn't changed in years.
https://forums.slimdevices.com/showthread.php?107583-Which-is-correct-latest-firmware-version-for-To...
I would suggest installing EDO on the SBT to get higher rez playback:
https://forums.slimdevices.com/showthread.php?94512-Announce-Enhanced-Digital-Output-app-USB-Dac-and...
Then update your LMS to the nightly build (7.9.2 currently)
http://downloads.slimdevices.com/nightly/index.php?ver=7.9
https://forums.slimdevices.com/showthread.php?107583-Which-is-correct-latest-firmware-version-for-To...
I would suggest installing EDO on the SBT to get higher rez playback:
https://forums.slimdevices.com/showthread.php?94512-Announce-Enhanced-Digital-Output-app-USB-Dac-and...
Then update your LMS to the nightly build (7.9.2 currently)
http://downloads.slimdevices.com/nightly/index.php?ver=7.9