Nikon D850 Menu Manual page 104

❚❚ Restoring Default Settings
To restore default settings, highlight a
bank in the Custom settings bank
menu and press O (Q). A confirmation
dialog will be displayed; highlight Yes
and press J to restore default settings
for the selected bank (0 13).
A
See Also
For menu defaults, see "Custom Settings Menu Defaults" (0 13). If
settings in the current bank have been modified from default values,
an asterisk will be displayed adjacent to the altered settings in the
second level of the Custom Settings menu.
104 Menu Guide
O (Q) button