Oh, weirdly, when you put it into fully-auto syncro mode (3 flashes) it actually does do the fully auto shifting. But it doesn't appear that semi-syncro works.
I am the previous owner and they've never been plugged in to a PC to my knowledge. Maybe the shop did something (unlikely) but the mode is changing via the double click - I can see the lights doing their solid / 2 flash / 3 flash thing.
Oh, weirdly, when you put it into fully-auto syncro mode (3 flashes) it actually does do the fully auto shifting. But it doesn't appear that semi-syncro works.