Hello, i'm an owner of a sky3ds with blue button, to play i use 2 micro sd: 1) Sandisk 4gb class 4 micro sdhc 2) micro sdhc 4gb class 4 (just that) Recently on the second micro sd of my list, it has pokemon alpha sapphire as first game, then tloz link between worlds as second and last. The problem at the start is that tloz didn't maintain the savegame when i press menu, then leave, change to the first sd of the list and get back to the second sd to check everytime that just pokemon maintain the savegame but tloz not. I formatted the second one with panasonic sd formatter like 5 times and i still tried to mantain the save on tloz but nothing, but then i tried something, before i switch the 2nd sd to the 1st i pressed the blue button of the sky3ds to get back to the first game, pkm, then i switched to the 1st sd card, after that put the 2nd sd with pkm and tloz and... THE SAVEGAME OF TLOZ WAS THERE, i verified this 4 times and i have to do that to maintain the save if i want to play tloz link between worlds and mantain the savegame (rare isn't it?). So, to resume, i have to get back to the first game before i switch the 2nd sd to the first, by the way, 0 issues with the first one. This problem is caused by the quality of the sd?, not the sky3ds?. I'm planning to buy a sandisk ultra 32gb microsd hc class 10 SDSDQUA-032G-U46A, it is a good one because of class 10 and the "ultra" thing? can somebody recommend me a good micro sd above or equal to 16gb? I don't want to have this kind of issues. Greetings.