Before you begin, note the following:
- If you are upgrading from a version older than WSO2 EI 6.5.0, you should first upgrade to WSO2 EI 6.5.0, and then upgrade to WSO2 EI 6.6.0.
- For information on what is new in this release and why you should upgrade, see About this Release.
- For more information on ports, see Default ports of WSO2 Products. The default ports in WSO2 EI are listed under Ports of WSO2 Enterprise Integrator.
See the following topics for details: