When upgrading Release 5 Web Proxy Server to Release 5U1, consider the following aspects of the upgrade process:
General Upgrade Approach. The upgrade is performed using patches. There is no additional reconfiguration required.
Upgrade Dependencies. Web Proxy Server has dependencies on a number of Java ES shared components (see Table 1–8).
Backward Compatibility. Release 5UI Web Proxy Server is backwardly compatible with the Release 5 version.
Upgrade Rollback. Rollback of the Release 5U1 upgrade of Web Proxy Server is achieved by removing the upgrade patches.