I have a bunch of R4 SDHC '2013' carts for my kids and I tried to update them so they would work with the 6.0.0-11u update on the 3DS. I ran the update on a 3DS with 4.4.0-10U system menu and it identified the card and flashed from either v5.03 or v5.06 to v6 with no trouble. When I put it on a 3DS with the 6.1.0-11U system menu it said that nothing was inserted into the slot. I checked it on the 4.4.0 3DS and it showed the same thing. So I figured it was a bad flash and tried another card but it did the exact same thing. I don't want to mess up my other 2 carts - any ideas on what happened here and how to fix it? Thanks.