No, the 'r' command is the only one we use when applying upgrades.

There's a reboot command that can be issued to the pump program which does a full reboot, but the usual upgrade sequence is this:

Power on, go into flasher
Flash all areas necessary
'r' to run the bootstrap
Enter pump program when kernel boots
Repartition & download data to disk
Reboot in pump program (I seem to remember this is ctrl-A to get into the pump, then "reboot" to reboot).

Hugo