I've read a lot of things here and there, and I'm getting more used to the glossary of this subject, I need to say that I'm a bit noob with Nintendo's software (no CFW) so I've never done simple task like backing up a SD or save games of eShop games, I've successfully downgraded a O3DS to 4.5 and installed Emunand in 10.3 but with this thing I'm having some doubts... I'll try to explain as good as I can: 1.- And most important, is there any way currently to keep playing my cartridges normally? My save data of Majora's Mask was wiped when tried to play it in O3DS emunand 10.3, last time I've played it was when I had it in 9.9. Now when I create a file and then try to play it in my New Nintendo 3DS Xl got wiped again, I've read that I could play it in the sysnand, but mine is to low and the game doesn't run, and booting would be a hassle. I'll keep buying my cartridges and I know about the dump process but I really would love to just play without any installation. 2.- A ton of guides I've seen about downgrading and installing CFW suggest to use a tiny MicroSD/SD or the default ones of the systems, If I want to keep my information of my MicroSD (I've Mario Kart 7 from the eShop, and the save, the most important of course) I just should copy all the information to my PC, do the entire process of downgrading and installing emunand etc etc? and then when I've my emunand installed I just can copy the old files to my microSD? sorry if it sounds confusing but I've read some guides about transferring the emunand of a SD card to another, but I think is not completely what I want, I'm a lot worried about the info and I just have the microSD that came with my NN3DSXL, (I'm planning to get a bigger one, but isn't recommended to this process I think). 3.- If I want to unlink my nand, the only way is formatting the handheld? what about the activity log and the streeetpass? 4.- How can I back up the information of my O3DS's SD? It has CFW as I've said before, just copying the files? I know backing up the nand takes a process apart.