Lost CAT control after upgrading to macOS 26.3

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I’ve been very happy with my Digirig Mobile to date - I use if for POTA activations with my Xiegu G90 and MacBook Pro. However I made the mistake of upgrading from macOS 26.2 to 26.3 yesterday and discovered today that CAT control no longer works. The audio side of things is fine but whatever I do with the radio settings in WSJT-X I can not seem to get CAT control working again.

I went back to my old interface (Digimode 4) and that still seems to work OK with macOS 26.3 without any changes to the settings, so it seems to be something specific to the Digirig - possibly something to do with the virtual terminal that’s used for CAT control and/or hamlib?

Any other Mac users out there having similar problems?

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Maybe new system needs serial device driver re-installed.

Do you see Digirig’s serial port listed in /dev folder?

ls /dev/tty.*

ls /dev/cu.*
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Many thanks for your suggestion - I took a fresh look at the problem today and noticed that one of the plugs going into the Digirig was not quite fully seated in the socket (by about 1mm!) - I pushed it in and the problem went away. So just a coincidence that this happened when I upgraded the OS, and I was therefore barking up the wrong tree. Life is good, once again. 73 and 44!

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