ISv8.1 - installation of IA8.1.1 - how to keep silent

Question:
Trying to automate the client upgrade of Information Analyzer from v8.1 to v8.1.1 (installation of IA-811-upgrade-V2-windows.ispkg)

- is there a way to avoid the need to enter '1' and 'enter' to accept the license agreement during console-installation?

In the main installations a response file can be used, but is there a way for updates?

My installation command:

C:\IBM\InformationServer\ASBNode\apps\jre\bin\java.exe -jar updater.jar -i C:\IBM\InformationServer -p C:\patch\81-critical-patch.ispkg -console

Answer:
InstallPatches.sh:
"\IBM\InformationServer\ASBNode\apps\jre\bin\java" -jar updater.jar -i "/IBM/InformationServer" "$@"

TestInstall.sh
./InstallUpdate.sh -version -console
./InstallUpdate.sh -p IA-811-upgrade-V2-windows.ispkg -console -force << EOF
1
EOF
./InstallUpdate.sh -version -console