An anonymous reader writes: Texas Instruments strikes back against Nspire gamers and hackers with an even stronger anti-downgrade protection in OS 3.0.2, after the TI calculator hacking community broke the anti-downgrade protection found in OS 2.1 last Summer and the new one in OS 3.0.1, one month ago. In addition to that, in OS 3.0.1 the hackers community found Lua programming support and created games and softwares using it. Immediately, TI retaliated by adding an encryption check to make sure those third-party generated programs won't run on OS 3.0.2. OS 3.0.2 can be found through this page.
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