I will talk about the latest version. Firstly you should write about:confing in the adress bar than click the button of accept the risk than continue. The second step is you have to type TLS in the search and stop the list is being filled. Third step is find the security.tls.version.max restore the volve to default of 1. Fourth step is volues should be like this:
3 for TLS.1,2
2 for TLS.1,1
1 for TLS.1.0
0 for SSL.3.0