If you are currently maintaining a system with WINCC 7.0 SP3, applying Update 1 is not a simple click-and-run process. Note the following:
After applying wincc 70 sp3 update 1 upd , you must revalidate the SCADA system. wincc 70 sp3 update 1 upd
: Unlike some minor hotfixes, Update 1 was officially released as a DVD and was not initially provided as a standard public download. It is included in new Base packages or provided through the Software Update Service (SUS). If you are currently maintaining a system with WINCC 7