A lot of people have been reporting issues with KK not recognizing MK3 keyboards, having firmware updates. I've had a few of these and I feel pretty confident that the source of these issues for some people is the factory supplied USB cable. As it seems to cause all of the above issues. For me it doesn't happen every single time, so the cable isn't completely faulty, rather possibly lose or poorly soldered connections?
Steps to reproduce:
Connect MK3 keyboard to front panel M2 Studio tbolt port using factory supplied cable and power on keyboard.
Launch KK3.0.2.
The following is what appears on my keyboard
I can't use any of the knobs or buttons to load a plugin. If I manually load an instrument using the mouse on my Mac. the above screen changes to "No Instrument/Effect Loaded - Use the Browser to load an Instrument/Effect" What's really strange is that the actual piano keys (black and white keys) work.
Now if I place the keyboard into recovery mode and try to run the firmware update, it fails and continues to display the recovery mode screen
Solution: The USB-C cable that was supplied with the Ableton Live Push 3 works reliably. There may be other construction differences, but one thing I do know is that both ends of the Push 3 USB-C cable have molded in RF chokes. I'm not saying this is the only cable that will work reliably, it's just one I happened to have handy. With the Push 3 cable, the firmware update works fine and there or no issues using any of the keyboard controls in KK.
I'm wondering if a lot of these connectivity issues, KK not detecting the keyboard, updates failing etc.... are actually related to the USB cable and not software/driver issues.