Your Nspire OS can upgrade your Boot2 with the one it does include, but never downgrade it.
The only way to downgrade your Nspire CX Boot2 up to now was to use an external RS232 adapter.
But like we did for classic Nspire in a previous news
, Bsl and me have just released Boot2FlasherCX!
No need to deal with an RS232 interface anymore! By just pressing a single key you can freely upgrade/downgrade your TI-Nspire CX Boot2 with the 3 released versions up to now: 3.0.1, 3.0.2 and 3.1.0.
Of course you can flash development Boot2, Boot2 from another model, modified Boot2, 3rd-party Boot2... Possibilities are endless!
Just be sure of what you are doing, because if your Boot1 does reject your Boot2, you'll end up needing the RS232 interface to repair your Nspire!...
Download from the TI-Planet news:http://tiplanet.org/forum/viewtopic.php?t=8973