So, managed to downgrade succesfully from 10.3E to 9.2 on my o3DS, i'm now looking to install a CFW but i'm full of doubts, and each and every search only confuse me further. Ok, basic doubts related to the 3DS itself. 1.- Does the CFW overwrites the official system menu or is it launched from a HBL? 2.- What will happen to my NNID and linked games? If possible, i'd like to keep them (i'm using mi NNID on my Wii U already) 3.- Do i need to completely format my SD Card? Doubts related to CFW 4.- Is a 16 GB SD Card enough to have a CFW running parallel with the OFW? 5.- Can i link my NNID to CFW? Since i intend to use it as my de facto FW 6.- Does a CFW load homebrew without need of extra entrypoints? 7.- Is EmuNAND the base to install a CFW? 8.- Recommended CFW?