You are likely correct.
My Kemper got knocked over last week before the problems started for me with this same updating analogboad issue.
Kemper support had me try a reboot off of a USB stick, but that did not work.
They also suggested that this was a hardware problem.
So, it turns out that the circuit board with the processors on it got knocked out of alignment when the amp fell down.
It now works fine after the board was reseated and the firmware was updated.