At last, TI has removed the dangerous 3.0 OS from its server. (we had to fight for a full week for that... they didn't want to believe: we were lying, we were responsible for this by using Ndless/TNOC...)http://ti.bank.free.fr/index.php?mod=news&ac=commentaires&id=1068
For the non-CX Nspire, the downloadable OSes are back to 2.1.
Yeh, I noticed that to. Bricked calc's are very costly to ti and to their reputation. You would think that TI would want to thank this community for the help.