KVM Firmware Updates
This firmware procedure is for the mainboard firmware upgrade only.
Upgrade Tools List:
- Windows 7 or 10 computer w/ USB-A port or RS-232 serial port (A 9-pin “D” type, DB-9 port)
- HyperTerminal, TeraTerm or other serial console programs
- 16-bit Flash Programmer.exe utility software for the main board
- Firmware upgrade cable (an RJ-45-to-DB9 cable, included with each KVM switch)
KVM switch setting to be firmware upgrade ready:
- Set the hotkey select on the front panel of the KVM switch to <Ctrl> as the default/selected hotkey.
Making the Serial Connection
Step 1: Connect the Cables
Use an RJ45 to DB9 cable to connect the Serial/Control port on the back of the KVM switch to your computer.
If your computer lacks a serial port, you can use a USB to DB9 active converter cable.
The active USB-to-serial converter can create a virtual COM port for the computer.
Step 2: Find the COM Port
Step 3: Use a Terminal to Confirm Connection and Firmware Version
Any terminal program should work, but for this guide, we will be using Tera Term. Once you have downloaded and installed Tera Term you can use it to send and receive commands with the KVM switch.
Start by selecting Serial and then using the drop-down to select the COM port your KVM is connected to.
Once you are in the terminal, press the Setup drop-down and select Terminal, make sure Local echo is checked.
Press the Setup drop-down again and select Serial port. Change the Baud rate to 115200. Press OK to leave the menu, and then press the reset button on the KVM switch. The terminal should print out the firmware version of the KVM switch.
Now you must close Tera Term to update the firmware.
Updating the Firmware
Step 4: Getting the Firmware Files Ready
Step 5: Installing the Firmware
Now press and hold the port 1 and 2 buttons for one second, and while still holding press reset and release the reset. All of the hot-key lights should be solid ( firmware upgrade mode). The KVM will only stay in this mode for a few seconds, so complete this quickly.
Execute the .bat file now and it will run the firmware upgrade.
Confirm the firmware version
Check up/ confirm the mainboard firmware
While the Hyper Terminal or Tera Term (or any serial console program) is ON/Connected, AND the KVM switch is powered up,
push the “reset” button on the front panel of the KVM switch. The current mainboard firmware info and KVM switch status will be shown.