Canon EOS-1D X Mark III DSLR Camera (Body Only) - Manual (Page 604)

4.
Select [Set root certif].
5.
Select [Load root certif from card].
6.
Select [OK].
The root certificate is imported.
Select [
OK ] on the confirmation screen to return to the [ Set root certif ]
screen.
Note
To delete the root certificate imported to the camera, select [ Delete root
certificate ] on the screen in step 5. To check who it was issued to and issued by,
the period of validity, and other information, select [ View root certificate details ].
604