One of my customer is interested in upgrading their existing windows based ACS 4.0 to 5.3
Now in order to do so should the customer order upgrade part number CSACS-5.3-VM-UP-K9 or they have to order new part number L-CSACS-53VM-K9.
So far i know is that CSACS-5.3-VM-UP-K9 is only applicable for version limited to 4.1 only and for previous versions we have to first upgrade to 4.1 and if i do so then is their need to order seperate upgrade from 4.0 to 4.1?
Customer do not have SAS contract.
Suggestions/Answers shall be welcomed