This is the only way that we can prevent future updates from blocking the new flashcarts' access to the DSi. We need to create a custom firmware that updates to new versions of the custom firmware instead of new versions of the official firmware. That also requires some kind of exploit to be found in the current firmware though. I hope somebody here on GBATemp will become the "Dark_Alex" of the DSi scene here. We are the largest GBA and DS community of the web, so I'm sure somebody will be able to take the time and do this for us so we don't have to get our new DSi flashcarts blocked.