I’m sure several of you have encountered the new firmware update for the Subharmonicon…
Alas, it appears I do not have a suitable interface to complete it.
Wondering what USB-to-MIDI adapter is working for you in transferring SYSEX files on MacOS.
Any other way to make this firmware update happen, besides via a MIDI interface or USB adapter (i.e., spending more money)?
Thanks in advance for any quality recommendations.
Sorry, but looks like you’ll have to spend some money. 
Since there’s no USB port on the Subharmonicon (or any Moog semimodular), the only way to perform the firmware update is through a USB/MIDI interface. If you already have an audio interface connected to your computer (like a Focusrite Clarett or Universal Audio Volt) it likely has a MIDI out that will connect to the Subharmonicon. You’ll need the 5-pin DIN to 3.5mm TRS plug adapter that came with the Sub.
If you don’t have an audio interface, you can get a simple USB-MIDI adapter for under $50–$60 from iConnectivity, Yamaha, Hosa, and others. Check out this Sweetwater page: https://www.sweetwater.com/c677--MIDI_Interfaces
I have a MKi NI Komplete Audio 6 (almost a decade old at this point), but it did not seem to work.
And I have read several of the options offered above have been unsuccessful with SysEx transfer, for one reason or another.
Maybe someone can recommend a USB-midi adapter that has successfully made this update?
I read posts that talked about the Roland UM-1 in good (but I haven’t tried it).