Arylic H50 - new firmware :(

The 4Stream app required a FM update for the Arylic H50. I completed the update.
New FM version: 4.6.522143.80.
Player integration via http/https protocol is now impossible.

The browser displays the following message:
Access to 192.168.50.176 was denied
192.168.50.176 didn’t accept your login certificate, or one may not have been provided.
Try contacting the system admin.
ERR_BAD_SSL_CLIENT_AUTH_CERT

How to install the previous version of FW or is this a bug in the new FW and the bug will be fixed in the next version?