Unable to update NTS-1 firmware (Mac)

[mcandre]

I just assembled my KORG nu:Tekt NTS-1 and plugged it into my Mac. The power is able to come on and the speakers dingaling with the uncalibrated ribbon keyboard. But I am having trouble getting a basic firmware update to process.

9/10 times, booting with the oscillator button held down results in "F.Err" displayed. This seems to happen most often when the NTS Digital Kit Updater is running at the time of the NTS-1 boot.

Sometimes it shows "S.uPd" for a fraction of a second and then shows "F.Err".

Other times, especially if I quit the NTS Digital Kit Updater app first, then the NTS-1 displays "S.uPd". However, when I then launch NTS Digital Kit Updater, that complains it is unable to found any NTS-1's connected. It advises to relaunch the app, with no change in behavior.

I'm using a good USB-A to USB-C adapter that works with many other devices, to bridge the cable between the NTS-1 and my 2018 MacBook Pro.

Some apps have had a hard time migrating to Catalina's new permissions model. I added the NTS Digital Kit Updater app to "Full Disk Access", but no change in behavior.

In any case, the official mac_compatibilitychart_KORG_en.pdf claims that the NTS-1 supports Catalina. Any tips?