FW Updates? for RND200V1 ? (ReadyNAS Duo)

Some issues with Samba, SSH, HTTPS. basically old protocols vs new ones. Or is it the END OF LIFE? any advice  how to catch up? (without buying a new one?) this is the latest FW RAIDiator 4.1.16 [1.00a043] . 2TB drives redundant. The operating system is outdated. 😞