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The "Operating System" is software shipped pre-installed into every DSi which allows the launching of games from an officially Nintendo certified game card, launching of Nintendo Certified "channels" and DSiWare titles. It run a similar GUI like the Wii.
The DSi runs in certain permission modes similar to the Wii where running backwards compatibility games turns off the extra hardware and clocks down the CPU.
Versions
| Version | JAP | USA | KOR | EUR | Release date | Changelog |
|---|---|---|---|---|---|---|
| 1.0 | Launch day | Version available at launch | ||||
| 1.2 | Launch day (EUR) | Version available at EUR launch | ||||
| 1.3 | 3rd April 2009 | Data manager now available in DSi Settings, and attempted to stop some DSi flashcards |