User guide

S900 User Guide
3.3 Update firmware
Update the firmware of the S900 by utilizing the USB Pen Drive
(flash drive).
Caution: Only change the firmware under the guidance of your
dealer or ZK Software Tech Support.
From within the System Menu, scroll with the
/ keys and
▲/▼keys until Update is highlighted. Then press OK.
Insert the USB Pen Drive (flash drive) containing the Upgrade
file(s) into the USB port of the S900.
The S900 will automatically recognize the upgraded
firmware/file(s) and will prompt you with instructions.
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