Hi Alex,
Go to the “Software Update” of your mac. Download and install the thunderbolt firmware update that shows up in the check list after the search. You might have to do this 2 times.
After restarting your mac, you will have access to the preferences box of the BMIE.
Ajust your settings and your ready to go.
Hope it helps
Fábio Ribeiro
PROMARTE
Realizador / Director
Coordenador de Pós-Produção / Post Production Coordinator
Maputo – Mozambique