Depending on which path you have taken for backend installation before with current server you can update your backend to latest version from same path as guided below.
In the location you have copied
docker-compose.yaml file earlier run following command and backend would be updated to latest version.
wget -qO- http://ridy.io/docker-compose.yaml > docker-compose.yaml && docker-compose pull && docker-compose up -d
Then login into the dashboard in some cases if required to configure you will be redirected to configuration page.
Android & iOS¶
Updating those will depend on changes done if any (This includes configurations you have done as instructed on their own sections). Using a VCS (Github, BitBucket & etc.) can help you track of changes and upgrade easily. It is important that you update your Android & iOS client is in line with server installation. If not in some cases unexpected errors could come up.
Tip For Developers
A good setup for VCS would be to have a master branch with plain files you download from codecanyon and a branch with your own changes. You can you can rebase your version with latest version and benefit from updates easily.