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How to debrick KVM via RKDevTool

This tutorial will introduce how to debrick GL.iNet KVM using the RKDevTool. It applies to scenarios where the KVM is bricked and cannot be recovered via regular firmware updates or U-Boot failsafe mode.

Preparation

Please prepare the following tools for debricking.

  • A Windows computer
  • A USB data cable
  • A power adapter (for the KVM device)

Note

Do NOT disconnect the USB cable or power off KVM during the debricking process, as this may damage the device.

It is recommended to back up important data before starting the debricking process.

Debrick steps

To avoid debrick failure, please follow the steps in order.

  1. Power off your KVM device.

  2. Download the latest firmware of your KVM device from here to your computer.

  3. Download the driver package from here to your computer, and extract it to any directory.

  4. Double click the .exe file to complete the driver installation program.

    install driver

    install driver

  5. Download the RKDevTool from here to your computer, and extract it to an easily accessible directory.

  6. Double click the .exe file to run the flashing tool on your computer.

    run rkdevtool

    run rkdevtool

  7. Connect the KVM's Type-C OTG port to the computer's USB port via a USB data cable.

    Take Comet (GL-RM1) as an example. The Type-C OTG port is shown below.

    connect usb cable

  8. Hold the RESET button for 10 seconds while plugging the power cable into KVM. Then release the button. Your KVM device will enter the Loader mode.

    reset button

  9. Turn to the RKDevTool panel, go to Upgrade Firmware -> Firmware, select the firmware downloaded in step 2 to upload.

    select firmware

    Then turn to the Upgrade tab next to the Firmware tab, it will display "Found Loader Device" and start flashing the firmware.

    rkdevtool panel

    The KVM device will automatically restart once the upgrade is complete.

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