I am trying to install some cia's such as bigbluemenu.cia and some games. These are the same cia's that install fine on the o3ds but they all come up as invalid, I can't even install bigbluemenu.cia I have a 32 gb sandisk microsd that I bought from Amazon. I did not buy from a 3rd party, I bought from amazon themselves, they were the seller. I had about 17 gb free when trying to install the cia and I even deleted all of the cia's except bigbluemenu.cia and first it said it was invalid, I hit retry, it said it was already installed but it did not show up on the menu after. Nothing came up to unwrap.