System Menu 1.4.2 was released on 11 September 2010 for China only.
- Features Behind-the-Scenes improvements to system performance
- Blocks the Supercard flashcart.
If you do not update, you can't access the DSi Shop.
System Menu 1.4.2 was released globally on 10 May 2011. This includes China, the China version is 1.4.3C.
If you don't update, you can't use the DSi Shop.
- Blocks flash cards, except for iEvo. iEvo still works in both DS and DSi mode.
- Blocks copying all current and future DSiWare exploits to "internal memory".