Hi guys! first, excuse my bad english. A quick explanation: So, 6.3 and lower uses Old keys, and 7.0 and higer uses new keys. Let´s uses, NK (NEW KEY) OK (OLD KEY). We need to upgrade real NAND to 7.x or higer to apply the NK so.. why not...? 1.- Backup real nand (better by soldering because GW sometimes in normal 3ds, not XL, don´t dump as well some special NAND chips..) 2.-Update real nand to last version, i think, bootrom will be updated too. 3.- Restore 4.x nand; bootrom will continue updated but we will can continue using the ds profile exploit because we´re in 4.x 4.- Launch GW 2.1 (or not?) not probably, but is probable that emunand will load the NK title like youtube. Else, gateway would make a new launcher that supports the NK. Ok guys.. is probably that ? Thanks for your attention!