Note: While I work for Hewlett Packard Enterprise, all of my comments (whether noted or not), are my own and are not any official representation of the company. ---------- If my post was useful, click on my KUDOS! thumb below!
Generally, you can only download the service pack for HP SE. The base bits have to be purchased. If you have a HP Sales contact you may be able to get it and install it using a 30\60 day temporary key.