service mode allows for device info to be shown, firmware to be dumped1), and most useful, unlocking the 30 minute video recording limit (note that doing this places the camera into service mode permanently).
keycombos
DMC-ZS60: with camera off, power+disp+right+menu to enter service mode. with camera on and in service mode, show data is playback+menu+left, record timer unlock is playback+menu+up.