Can you use the instructions at https://certbot.eff.org to upgrade your Certbot?

In (almost) all cases, the answer is yes.

Apparently some users working around TLS-SNI-01 deprecation have been confused by this when we tell them to make sure their version of Certbot is up-to-date.

jsha suggested we could resolve this problem by explicitly saying that these installation instructions also work to update your Certbot installation. For better or worse, making this change must be done on a case by case basis by installation method. This is bad because it's tedious but it's good because we can limit this change to instructions where we know this is true. I'm not sure whether or not there are any problems with all the different package managers we tell people to use across different OSes.

The files that need to be updated here are located at https://github.com/certbot/website/tree/master/_scripts/instruction-widget/templates/install. A couple files there are reusable snippets that don't refer to a specific installation method, but most are installation instructions for specific OSes.