how to upgrade to Roundcube 1.5.3 after it’s released. Replace 1.5.3 to the latest version. Find out about the latest Roundcube downloade page.
Download the Roundcube latest version to your home directory.
cd ~ wget https://github.com/roundcube/roundcubemail/releases/download/1.5.3/roundcubemail-1.5.3-complete.tar.gz
Extract the archive.
tar xvf roundcubemail-1.5.3-complete.tar.gz
Change the owner to www-data.
sudo chown www-data:www-data roundcubemail-1.5.3/ -R
Then run the install script.
sudo roundcubemail-1.5.3/bin/installto.sh /var/www/roundcube/
Once it’s done, log in to Roundcube webmail and click the About button to check what version of Rouncube you are using.
