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How do I perform a firmware reset on an Evoko Liso?

How Do I perform a firmware reset for the Liso?

Updating the Liso firmware should normally be done remotely over the network using Evoko Home or by using a USB flash drive, but in some scenarios a firmware reset might be necessary.

A firmware reset is different from a firmware update in that it resets all settings and leaves the Liso in an unconfigured state. After firmware resetting a Liso you will have to reconnect it to Evoko Home and assign it to a room. Scenarios where performing a firmware reset can be necessary include rare issues with the running software on the Liso device or configuration conflicts. It is also necessary if the Liso was previously connected to an Evoko Home server that is no longer available.

If a Liso is running a very old firmware, performing a firmware reset can also be the quickest and easiest way of bringing it up to date.

The process of performing a firmware reset can be split into two steps: 

Step 1: Create a bootable firmware reset USB 

To write the firmware reset image to an USB flash drive you will need to use some kind of disk imaging software. In this example we will use Etcher which is open source, free to use (Apache License 2.0) and available for Windows, Linux and MacOS. You can use other software such as Win32 Disk Imager (GNU GPLv2, Windows/Ubuntu) or Rufus (GNU GPLv3, Windows) if you want to.

Note! We recommend using a high quality USB flash drive of at least 4GB and physically small enough to fit into the Liso.

Important! Kingston brand USB flash drives are known to be incompatible with the Liso.

Start off by downloading the Firmware Reset file from the Evoko Liso download page.
Please select the version that corresponds to your Evoko Home install (v.2.x).

Next download Etcher and install/run it on your PC.


In Etcher press Flash from file

Select the downloaded firmware reset image and press Open.
There is usually no need to uncompress the .sdcard image as Etcher will take care of that.

Insert and select your target USB flash drive.

Caution! All existing data on the USB flash drive will be deleted. To proceed, press Flash! Screen_Shot_2022-10-17_at_9.37.06_PM.png

The process usually takes around 5-10 minutes depending on the write speed of the USB flash drive.

When Etcher is finished writing the reset image to the USB flash it will do a check to verify. Screen_Shot_2022-10-17_at_9.44.58_PM.png

Once the image has been verified it will be ready to use. 

The USB drive name should now be Boot imx6dl and should contain some new files.

Please note that there are partitions not normally visible by Windows and you might get error messages saying you need to format the drive before it can be used. Please ignore these messages.

Step 2: Boot Evoko Liso with the firmware reset USB

Next step is to boot the Liso from the newly created firmware reset USB rather than the internal storage.

  1. Power off the Liso by removing the PoE or power cable.
  2. Insert the firmware reset USB into the Liso USB port.
  3. Power on the Evoko Liso by inserting the PoE or power cable and wait.
  4. If successfully booted from the USB stick the following text should be displayed:
    If you do not want to flash the device, remove the USB image and reboot the device, otherwise it will start flash in 30 seconds
  5. Once the firmware reset is complete the following text should be displayed:
    Flash has been successfully completed! Please unplug the USB and reboot the device.
  6. Remove the USB flash drive and reboot the Liso.


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