If you are planning to upgrade to a 9.x version of TIBCO Nimbus we fully recommend that you gain assistance from the TIBCO Technical Consultancy team to ensure any upgrade is successful. Please contact the TIBCO Nimbus support team by raising an SR at https://support.tibco.com and ask for details. We will also happily provide any information on the latest release of TIBCO Nimbus
In order to upgrade the web server you should ensure you have a full backup of the Web Server folder.
Run the setup.exe and select Enterprise Server Installation
Install the components to the same location as it is currently installed
You will then need to alter the config.ini within the \\web server\config folder so that any variables from the existing installation are replicated.
Please note you should not copy the config.ini from the old installation as there are changes between each versions.
Please refer to the Admin guide for your specific version of TIBCO Nimbus.