How to upgrade from v2 to v3 (Pi)

[snieuwen]

I have been running Domoticz for quite some time now on my Raspberry Pi.
Current version is 2.4031(Compile Date: 2016-01-05 02:44:40).
I have noticed there are no updates available anymore via "Check for updates" in setup menu.
On domoticz.com I can see the newest version available is 3.5877
How can I update to this version? Is it wise to do so? Will it keep all my settings?
(I guess I will need to backup to be sure first)

[Egregius]

You should always backup

When you have a good backup you could even do a clean install of the latest version.

[snieuwen]

But what about settings, hardware config etc, from the current config?

[Egregius]

Those are stored in the database. So backup the database, backup the complete domoticz folder.

[jannl]

Don't forget to backup the scripts directory and the files you changed in the www (sub)dirs.

[snieuwen]

Thanks, all worked perfect. First made backup and did new install, now up and running on 3.6207, all settings are fine.