Reset All Settings; Firmware Version - Nikon Z 7 Reference Manual

Reset All Settings

Reset all settings except Language and Time zone and date to
their default values. Copyright information and other user-
generated entries are also reset. We recommend that you save
settings using the Save/load settings option in the setup menu
before performing a reset.

Firmware Version

View the current camera firmware version.
G button ➜ B (setup menu)
G button ➜ B (setup menu)
Menu Guide > B The Setup Menu
311