Where can I download intermediate versions to update the server? (3.14 to 4.8.7 to 6.0.0)

Where can I download intermediate versions to update the server? (3.14 to 4.8.7 to 6.0.0)

Can’t find any repositories, please help

You can download using the version number in the URL via browser or curl on the command line
examples →
curl -L https://releases.rocket.chat/5.4.9/download -o ./rocket.chat-5.4.9.tgz
curl -L https://releases.rocket.chat/6.5.0/download -o ./rocket.chat-6.5.0.tgz