I tried googling everything high and low for weeks and I'm frustrated. Let me give all the info I can first before I get the same answers others have: ^^; I have an r4i Gold 3ds that I had since January 4th, 2013. So it's almost a year old. But I see no reason to be unusable besides the outdated firmware, which I updated on August 2013 to Wood Firmware Version 1.62. (link here) I bought the card on dsflashcart (click here for link of the item). The firmware is there too. I use a 8 gig SanDisk SD card with plenty of room for games left. I properly updated it by overwriting the old firmware. I also even updated it to work with a 3DS using a different updater provided. (I used this tutorial for both updates) I use a DS lite. I plan on buying a 3ds XL so I need this problem sorted out soon!! I updated the firmware as mentioned. When I bought the card brand new , some games just didn't work. Usually roms of big megabytes that take over 5-10 minutes to copy to the card. Other games that copy over instantly like Animal crossing work perfectly fine with wifi and everything. I updated the firmware and the problem still persists. I tried many many websites of the same game so it can't be the rom. My SD card still has lots of space left. The games that do not work just have a white screen on both screens and never load. Please any help? Thank you so much. My last resort is to delete everything and recopy all the games and save.dat files. (Do I have to reformat it or can I just delete everything and redo the updates+game transfers??) I am nervous to try this. I just feel like I might waste 3 hours of my life backing up all my games and save.dat files and it still won't work so I need advice before I waste my time doing that. Some games that won't work are: Love Plus Tokimeki Memorial Any Kingdom Hearts games Any big file games really THANK YOU very much if you take the time to read this and help me out. I REALLY appreciate it.