So I installed RxTools and set it up so it would coldboot. It was working fine but now it just goes straight into sysnand and says Could not Detect an SD Card. Also when I am playing games and close my 3ds and open it again it stays stuck on a black screen but this dose not happen all the time. Sometimes it the middle of the game it says that the sd card was removed. I have no idea what the problem is. It is a brand new sd cards and I never had a problem like this with my old sd card that came with the 3ds. The problem only started 3 days ago. It worked fine for a good 2 weeks. If I need to reformat my sd card how would I keep all my files and CFW safe? Any kind of help would be appreciated. Thank you!