There is currently no support for upgrading an older Gateway to its latest release. However, for easing the migration, it is possible to configure an existing Gateway to connect to our Bologna Data Centre. This can be achieved by editing your "gateway/conf/ecmwf.properties" configuration file and apply the following changes:

Configure the Gateway to connect to our Data Center in Bologna:

[Login]
ecaccessServer=boaccess.ecmwf.int

Comment out the "telnet" plugin to deactivate it:

[PluginList]
#telnet=...

Force the TLS version 1.2 protocol:
[Security]
SSLVersion=TLSv1.2

Comment out the "cipherSuites" to allow TLS cipher negotiation:
[ProxySocket]
#cipherSuites=...

After changing the configuration, the Gateway should be restarted to take the changes into account.