Keith,There's a warm reboot but I don't know if it would help you. You open the battery compartment and in a little corner by itself is a recessed button. Get a stylus or tooth pick or even the end of a patch cable or cable that you plug into a three-eights (small) earphone jack, and poke it into the button. It will click when it's down; hold it there for about five seconds, then release it. The machine vibrates, and then you wait for a few minutes, and eventually it turns on and speaks, and hopefully your settings are still active.
You could do a backup to keep settings on the internal flash drive; that way, when you get a new software update, you can then restore the settings from that internal flash memory, because the flash is not erased. (or so they tell me; I did a backup of system settings anyway, just in case.)
Mary