Canon Macro Ring Lite MR-14EX II - Manual (Page 38)

36
You can return the settings of the MR-14EX II shooting functions and
wireless multiple flash shooting settings to their default settings.
Press function buttons 2 and 3
simultaneously for 2 seconds or
longer.
X
The MR-14EX II settings are cleared
and the settings will return to normal
shooting and <
a> flash mode.
Clearing MR-14EX II SettingsN
Even when the settings have been cleared, the transmission channel during
wireless multiple flash shooting as well as the Custom Function and
Personal Function settings (p.58) will not be canceled.
COP
Y