Rollback process for upgrade of SQLdm

Hi,

I want to upgrade SQLdm from 10.2 to 10.3, but haven't done a SQLdm upgrade before. The change management process requires me to document the rollback process.

Obviously I would backup the repository database beforehand but what about the software elements, dlls, registry etc? Unfortunately a VM snapshot isn't really an option because of size.

Is there a defined rollback process for this?

Many thanks,

Simon