Canon imagePROGRAF GP-4000 Online Manual page 261

To display the printer's root certificate thumbprint in Root cert. thumbprint (SHA-1) or Root cert.
thumbprint (SHA-256), tap Printer information > System information on HOME screen of the
operation panel.
4. If thumbprint of certificate information screen matches printer's thumbprint, select OK. 4.
The root certificate registration is completed.
If the message to warn you that the secure connection is not guaranteed appears when you select
Log in on Remote UI after registering the root certificate, restart the web browser. The message will
not appear on the web browser.
Note
• Depending on the Android device, a warning may appear even after registering the proper root
certificate.
For Mobile Safari on iOS
1. Select For secure communication on Remote UI. 1.
2. Select Download. 2.
Downloading the root certificate is started and then Install Profile screen is displayed.
3. Select Install. 3.
Warning screen is displayed.
Note
• If a password is set on your device, entering a password may be required.
4. Select Install. 4.
5. Select Install on displayed dialog. 5.
The root certificate registration is completed.
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