Canon EOS-1D X Instruction Manual page 24

Configuring FTP Communication Settings
The network settings for FTP transfer are now complete.
During image transfer, the <Y> lamp on the camera blinks green.
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On the confirmation screen displayed
8
next, select [OK] and press <0>.
The <Y> lamp on the camera
lights up green.
Press <0> and turn the <5> dial to
9
select the set number, and then press
<0>.
Turn the <5> dial to select [OK], and
then press <0>. After the
connection wizard closes, the display
will return to the menu screen.