the "hold keys" function of the hold button (my favorite function of the keystep) stopped working after I powered the keystep using a usb cable instead of the usual 9v adapter (the usb cable moved slightly and the power was disconnected - perhaps a faulty usb connector). All other functions seem to work, including the hold button holding in arp mode and sending a sustain midi msg using the hold button, but it no longer holds notes when the arp/seq is stopped. I tried updating the firmware, trying different hold button settings in the MCC etc.
And the next day the same thing happened to another keystep