Today, a customer of ours, came with to sxt in hand, claiming that both of them after reboot would go back to default configuration.
I took the two pieces, and at first verified that in fact they would revert back to default configuration after each reboot. Thought at first,
something went wrong with ROS, so did an update of software and firmware. No success. Tried "enable jumper reset", tried "force backup booter",
yet both devices would go back at default configuration after each reboot. This happened by rebooting the sxt from /system reboot, as well as
from powering it off (removing plug) and then powering it up again.
So, the behavior, led me to think that the contacts of reset in the board were not separate any more. I looked at them, and they were pretty
rusted. So I cleaned them gently, using sandpaper, and after that the SXT are back to normal.