I upgraded to the latest firmware for the v2.6 hardware. When I booted up, I changed the timebase to 200us.
Now I can’t get to the sync mode with navigator b (so I can press navigator a to change timebase). Usually I would scroll to the right from CH(D), but now it skips the sync setting and goes to XPOS in the bottom right.
I tried reinstalling the firmware (to see if it would reset everything), but the device seems to be stuck in this buggy state. It keeps the timebase at 200us after each boot.