there is new version - in fact 3 new versions in chrome / firefox
1st one is bad / outdated
nos2x is bad. the UX is bad. i would consider not recommending that any longer and look at recommending Nostr Connect instead. it's essentially just a forked and improved version of nos2x by nostr:npub1zfss807aer0j26mwp2la0ume0jqde3823rmu97ra6sgyyg956e0s6xw445
Discussion
/firefox/addon/nostr-connect/
/firefox/addon/nos2x-fox/