I found out my niece has 1.3u firmware on her 4-week old DSi. I've read other posts about not working after 1.3e, but is 1.3u still avoiding the 1.4 problems? Does using a non-1.4 fixed flashcart on a DSi cause damage to the DSi itself (bricked)? Not having a DSi myself, how do you upgrade to 1.4... I mean does a user have to download and install a new firmware themselves, does the DSi auto-check for new firmware when connected to internet via wireless mode and then asks user to auto-update to v1.4?