1) Go to and download the latest firmware file and ZDownloader software for the GK420D.
Finding Your Router's Address (Windows)Finding Your Router's Address (Mac)Installing Router Updates Updating an Air Port Router Community Q&A Updating your router firmware can help improve connectivity and keep your router secure.
If the camera's firmware is already Version 1.1.0, it is not necessary to update the firmware.
Windows Upgrade The Zebra printer must be connected directly to the PC to update the firmware. cannot be connected to a network print server, it must be directly connected via USB or parallel port to the PC).("Canon") under which Canon is providing the software program for version-up of the firmware of Canon’s digital camera products "EOS REBEL XSi / EOS 450D" (the "Software").BY CLICKING "Agree" AT THE BOTTOM OF THIS PAGE, YOU ARE DEEMED TO AGREE TO BE BOUND BY THE TERMS AND CONDITIONS OF THIS AGREEMENT.The version of the firmware will not appear in the basic zone. (1-A) Battery Pack LP-E5(The battery pack must be fully charged.) (1-B) AC Adapter Kit ACK-E5 (sold separately) (2) SD card (64MB or more, 2GB or less) In order to supply power to the camera, either (1-A) or (1-B) is necessary.The downloaded file will automatically self-extract, creating the firmware update file.
It is always recommended to install the latest available updates to keep your network safe and efficient.