The A/V Binloop Uncompressed has two firmware types.
1) Controller Card Firmware - the brain of the card cage
2) Reproducer Card - each individual card in the cage.
To update Controller Card Firmware, download the latest "DBAP5" firmware from here and follow the instructions in the release notes.
http://alcorn.com/support/firmware.html
To update Reproducer Card Firmware, download the latest "Repro2KU" firmware from here and follow the instructions in the release notes.
http://alcorn.com/support/firmware.html