Is there a way to get the updated script reference for offline use?
Or do I have to stay with the old one:[33318-old+documentation.png|33318]?
EDIT: I tried uninstalling the engine and installing the most updated version of it(4.5.4) and it doesn’t seem to come with the updated script reference.
The documentation included with the version of Unity that you download is appropriate for that version. The documentation on the site is currently for 4.5.4 since that’s the most recent official release. So what you have on your computer and what’s on the site is the same right now. (Aside from some elements of the design, but that’s purely cosmetic and not relevant.)