To update the firmware on Riverside and Sunset, you will need a micro-USB cable to connect your pedal to a USB port on a computer. The micro-USB port is located inside the chassis of the pedal by removing the bottom plate. Once the bottom plate is removed, the micro-USB port is found on the left side of the pedal.
Once your pedal is connected to your computer and powered up with a power supply, you will need to download and install the Strymon Update software to perform the update on your pedal.
With the Strymon Update software installed on your computer, run the application with your powered pedal connected to your computer via USB. The Strymon Update software will automatically detect your connected pedal and show you the currently installed firmware version.
Check out the video below for additional help on performing the update: