0.4.0 RC1 - fresh install or update?

What is the best way of installing 0.4.0 RC1?

 

Do a clean install (reflashing) or can I use this guide (https://github.com/RasPlex/RasPlex/wiki/Update) to update Rasplex from my current version?

my 0.9.9.20 version of plex updated itself !