Spectrum 10.2.3 uninstall

Document ID : KB000076432
Last Modified Date : 13/04/2018
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How can we uninstall CA Spectrum 10.2.3 to go back to a previous service pack without uninstalling Spectrum completely?
Spectrum version 10.x.x
All Platforms
We cannot uninstall any service pack.
Spectrum 10.2.3 is service pack so we cannot uninstall just the service pack .
If we try to uninstall, it will uninstall whole Spectrum main release.
If you do not have a virtual snapshot before the upgrade, you will need to completely uninstall Spectrum, reinstall the main release and then the previous service pack that you wanted to downgrade to.