To apply a JomSocial upgrade patch, simply unzip the most appropriate package for your site, and upload them into Joomla's root directory. This will overwrite all JomSocial related files. It is advisable for you to make a backup of any customization done to core JomSocial files and templates.
Difference Between Updating and Upgrading?
By updating, we consider only moving from one version to another within the single branch. Updating will refer to applying patches that are provided for desired branch. For example, if you are currently using JomSocial 2.6.1 and want to update to 2.6.3, you can either use this method or follow the tutorial bellow. If however, you want to move from one branch to another and for example, upgrade from version 2.6 to 2.8, stop reading this now and use Upgrade method
Why no patch files are provided for upgrade?
The reason behind this is very simple. Every new version of JomSocial inevitably brings database changes, and these database changes can only be properly applied if the extension is installed through the Joomla installer.
To apply these patches, please download the package most appropriate to you. If you are currently using JomSocial 2.6.2 and wish to upgrade to Jomsocial 2.6.3, select 'JomSocial_2.6.2_to_JomSocial_2.6.3' file. Follow the procedure as ilustrated on the images below: