Sequoia Scientific


The latest version of firmware for your LISST-200X is:

v2.204 2022/07/07

To update your instrument to the latest firmware please follow the instructions below.

Update Procedure

Click here to download the update package. This contains the .binary LISST-200X firmware file.


Connect to the LISST-200X with Sequoia’s LISST-200X software. Verify the LISST-200X software is version 1.21 or greater. If the version is less than 1.21, downloaded the latest version from Sequoia’s website ( LISST-200X Software Page ).

Open the serial terminal in the LISST-200X software.

Type the ‘fwload’ command followed by enter. Type ‘SEQUOIA’ (all caps) to confirm. A menu will appear in the terminal window.

Press the ‘2’ key to select the option to load new firmware. You will see the message ‘Waiting for the file to be sent’, indicating the instrument is read to receive the new firmware file.

Go to the ‘Send’ menu at the top of the screen. Select ‘Y-Modem Send…’. Navigate to the update package file you downloaded earlier. Select the .bin or .binary file from the download package. The file will transfer will begin immediately. This will take about 5 minutes. Do not interrupt power or communication to the LISST-200X during this process.

Once the upload is complete, close the file progress window. A message will be displayed indicating the update was completed successfully. The bootloader menu will be displayed again.  Press the ‘1’ key to run the new firmware. Check that the firmware starts properly and displays the correct version number

The update is complete.