Grafana very old version docs

I’m using grafana 2.6.2 (I know it’s very old but I’m too lazy to upgrade) and the online documentation does not go back before version 4.1
Do you know if there is a hidden link to previous versions somewhere?
I haven’t been able to find them.
I’m having some trouble in setting up https access with SSL certificate.


Docs is part to the Grafana repo, so I would just check that version branch in GitHub:

Thank you.
It is not as easy as browsing website but in your link there is much more than what I need.

Thanks again,