The NXT-MSC controller web manager is inaccessible by the latest versions of most browsers due to its older TLS version and ciphers. To access the NXT-MSC controller via Firefox you have to change the minimum TLS version (this can be done with Firefox version 82.0.3 or lower).

Note: To find your installed version of Firefox, open the browser and click the main menu icon in the upper-right (three horizontal lines), select Help >> About. A dialogue box will appear displaying the exact version.

1. Open Firefox and type "about:config" into the address line.
2. Click Accept the Risk and Continue button.
3. Click Show All to list the editable settings.
4. Type "tls" into the Search preference name field. You will see several TLS related settings.
5. Click the edit icon on the right of security.tls.version.fallback-limit, change the field to "2", and press enter.
6. Repeat step 5 for security.tls.version.min.
7. Close and restart Firefox, then navigate to the IP address of the EP1502 using HTTPS. You will receive a warning the first time. Click Advanced…
8. Click Accept the Risk and Continue.
9. You should now have access to the login page.