Hello, I'm just looking for some info on how to play games on my nspire nx cas. I've seen that you need the 3.1 version of the os, but since I just got mine it has 3.2.3.1233. I've seen a few posts on downgrading os's but no clear instructions on how to do so beyond "go here, download this os file and install it." So here's what I'm looking for.

First off, can I even downgrade from the version I have to a version that can play games?
If so, where can I get the 3.1 os in english that I need to install?
How do I install it with the student software? I've never used it.
And if I mess up, how do I go back to a new version of the os / where do I get that file?

Thank you for any help!