Upgrading your FLS
There are a lot of differences between old (less than #1230+ builds) and current versions of Floating License Server. If you have an old version (build number is shown on FLS web page), we recommend installing the new version of license server and linking it to your company profile. After registration, new FLS will take license information from JetBrains Account.
If it's not possible or if your FLS build is not very old (less than #12431+ builds), FLS can be updated in-place.
Before upgrading your installation, check that your environment meets the requirements.
For the ZIP-based FLS's installation the upgrade procedure is close to the new installation. In short, you need to save configuration files with previous settings, replace old license server's program files with the new build and then place configuration files back. Configuration files you need to save are:
<fls_home>/conf/service-config.properties- the main config which contains IP / hostname / port listened by the application and other parameters
access rules config(if you use access restrictions)