Hi,
the only hidden function I've found yet is: plug an empty USB-Stick in the host port. Before powering up press and keep pressed the left cursor-button. Then press the power-button and wait a few seconds. The camera will create a file named "FLIRVers.rsc". For comparison I've attached my file.
Hope this helps a littlebit.
Edit: You couln't power the camera down, you have to remove the battery afterwards