How to change a none cas nspire into a cas one?

Hello everybody! It is my honer to ask you some questions there.I have a nspire with touch pad(none cas),it is in OS3.6 now.
With the help of the page: viewtopic.php?f=57&t=13213
I successfully use nlaunchy to launch OS 3.6 and OS3.1.
But I am disappointed that both of them are none cas.
Can I launch a cas os on my nspire?
Please help me ,thanks a lot!
With the help of the page: viewtopic.php?f=57&t=13213
I successfully use nlaunchy to launch OS 3.6 and OS3.1.
But I am disappointed that both of them are none cas.
Can I launch a cas os on my nspire?
Please help me ,thanks a lot!