Apple M1 Mini Mac / Black Magic Ultra Mini / + Big Sur = Doesn't see Device ?

Sound Surgeon

New Member
I've got everything plugged in and ready to go.....here's the hardware and here's the problem
PTZ Optics 30X HDMI out to Black Magic Ultra Mini Recorder Via Thunderbolt 2 to Thunderbolt 3 (Apple Adapter) into M1 mini Mac.
Updated all BMD 12.0 Beta Drivers, Re-Booted in Security Mode to allow Less Security and Kernel Management.
Rebooted and went to Security settings and gave Permissions to Black Magic Device.
Applied and Re-Started...Launch OBS ...Still no Device Found in Video settings ??
I've done this Install dozens of times and has always been successful .... but this is the first time with a Apple M1 !
I've talked to Tech Support at Black Magic and followed all software install instructions perfectly.
Should I send back the M1 or re-load an older software version ?
Is Big Sur not a good platform ? Does anybody have this problem and have got it resolved ? The Black Magic Forum has dozens of the same exact problems with these hardware configurations. Thanks for any help. Mark S. Florida / Sound Surgeon
 
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