Upgrade from a good old 3.2.2 !

Hello,

I’m using Dolibarr from a long time now, on a linux server, but I never ugraded my instance. It is still in 3.2.2

What is the best way to upgrade to latest version?

An upgrade is it possible, or should I export datas first, install a new dolibarr instance and import datas?
Anyway,does someone has already done this kind of evolution and what are the good steps?

Thanks for your help.
Philippe

What is your platform (Windows, GNU/Linux) ?