Forum TI-Planet.org

I upgraded my OS before searching if it were possible to switch the OS in my ti nspire cx to one with CAS features.

Is it possible to downgrade from OS 4.0.0.235 to 3.6?

My calculator's hardware is before the J series.

Not so far, at least without specific hardware to reflash the boot2 through RS232, IIRC.

If/When there will be a Ndless 4, then you'll probably be able to go back to 3.x