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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
To check which version of the DSi firmware you currently have open the System Settings and check the lower right hand area of the top screen.
| Version | JAP | USA | KOR | EUR | Release date | Changelog |
|---|---|---|---|---|---|---|
| 1.0 | Launch day | Version available at launch | ||||
| 1.2 | Launch day (EUR) | Version available in all european DSi at the launch day | ||||
| 1.3 | 3rd April 2009 | Data manager now available in DSi Settings (outside of Japan), and attempted to stop some DSi flashcards |