IOGear GCL1800 - Manual (Page 30)

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Step 6
Read the License Agreement and click “I Agree”
then click “Next” if you wish to continue with the
firmware upgrade. Otherwise, click “Cancel” to exit.
*Note: Please choose MAIN to proceed the
firmware upgrade. KB is a sub layer in the LCD
Console firmware.
Step 7
Choose the correct device* that you wish to perform
firmware upgrade from the “Device List” and then
click “Next” to continue. Then the Firmware Upgrade
Utility will verify if the device is connected to the
computer via the firmware upgrade cable. (Check
Firmware Version checkbox is optional)