How to upgrade from 1.1.3 to 1.3.9?

[tk3369]

Hi everyone!  I'm new here :-)

I have an existing installation of 1.1.3 that was set up back in 2015.  What's the best way to upgrade to the latest stable version (1.3.9)?

Thanks! 

[JohnDoh]

That is quite a big jump but I think the update script will handle it. You can find detailed instructions here https://github.com/roundcube/roundcubemail/blob/release-1.3/UPGRADING

Please remember to backup before you start.