I need Automation Studio 2.5.3 to edit and compile an old PLC project. I know that it is possible to migrate to version 2.7 (and I was also successful doing so) but due to company related safety limitations i need at least to build it once with the old version to verify the output.
In the past we shared it here. but we can not anymore. You can stil get it, but you have to request it on local support, because of security reason as @christoph.hilchenbac properly mentioned.