Well here is how my R4 stopped working I updated it on accident (Like many do) My card is 1.4V but I somehow got to upgrade it to 1.4.4 3DS 4.4 with an un-official patch.. (Forgot the link sorry) Now I need to update it to 1.4.5.. I went to the R4i website downloaded the kernel and when I tried to upgrade it had no upgrade option.. So I found out the 1.80 firmware wont work on my card so I changed back to 1.64.. I can upgrade again but how do I upgrade to 1.4.5? The R4i website's thing changes my firmware to 1.80 and wont let me upgrade to 1.4.5.. This may sound very stupid to all of you but I am new and it has been a pain in the ass for me to try to fix this thing... Wish the R4i instructions tell you in a clear message to not upgrade your DSi since many young kids like me do it not knowing the consequences of doing it..