This is the EBS-50 update image, contained in a Mender file.
See the manual for instructions with images.

Instructions:
- Go to your EBS-50 (default https://ebs50.local)
- Through the top bar menu select Advanced -> System Settings
- Select "Update firmware" in the left hand menu
- Select "Upload image" and choose the .mender file found in this zip
- Await the upload and update process. It goes from uploading, to applying, to finishing.
- When updating is done, press the "Reboot" button that appears on screen or power-cycle the EBS-50 hardware
- After roughly one to two minutes your EBS-50 has rebooted and ESL Web Server is available