I'm a PhD student and I work with a Mac which is not mine (I mean, it's property of the university). I'd like to upgrade the OS to the most recent version (compatibly with the hardware and other stuff...), but I don't now how this works. The questions are the following:
- Is the Mac "connected" to an account? (Actually I use it with no problem, but ...)
- To upgrade the OS, do I need to use an Apple account? (I think yes.) Does this account have to be associated with some purchase done in the past?
- Can I downgrade if something goes wrong?