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Messages - leomessi10

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General Calculator Help / Re: Installing CAS on TI-Nspire CX Non-CAS
« on: June 19, 2016, 04:01:54 pm »
Hi
I installed CAS on my calculator.
I want to upgrade my OS from 3.1 to 3.9.
How can I still keep CAS on my calculator?
Thanks

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