With the release of Capture One 21 comes official support for macOS 11 Big Sur. However, it is important that we make you acutely aware of a warning in the release notes:
• Tethering via Firewire is not supported with macOS 11 (Big Sur)
To be more specific, when a Phase One back is connected via FireWire, the computer will experience a kernel panic. Therefore, any user who relies on FireWire connection should not upgrade to macOS 11.
We have also reports that this is a system wide issue in Mac OS 11 which also affects other firewire based devices.
Additional notes:
• USB connections are not affected and remain fully supported ( Any IQ series Camera backs )
• Only Capture One 21 is currently supported under macOS 11 but the issue is not related to Capture One as this issue does not exist under macOS 10.15 on Capture One 21, 20 or earlier.