Quote:
Originally Posted by stargazer
So firmware upgraded HDX cards are always backward compatible with previous versions of Pro Tools?
I don’t need to worry about trying 2021.3 and rolling back to 2020.11 if PT doesn’t plays nicely on my system? (macOS 10.13.6)
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I can't say if this is always the case, but this was mentioned specifically in the 2021.3 Release Notes:
In order to support Big Sur, Pro Tools and the HD Driver have been updated to use modern interrupts (MSI). This change may also prevent or minimize conflicts with other PCIe devices on any supported operating systems.
This requires a firmware update for both HDX and HD Native. This firmware is backward compatible with earlier versions of Pro Tools and HD drivers.