This may be already known to some, but for those that don't, this is the fastest and easiest way to get to 9.0 - 9.2 if you don't have a nand backup that has 9.x already on it. There's no need to ever need to "Use Pasta CFW without Cubic Ninja" Just to be clear, launching Rxmode in sysnand is NOT Devmode! If you decide to use an older version of Rxtools such as 2.6, you won't find Devmode. For some off reason the 2.6 build on GITHUB does not have this option, yet 2.5.2 has this option. Just stick with 3.0 a and you'll be fine for the whole process. The only other safe way to use sysupdater is Pasta CFW 1.2.1 (Not 1.3), but only if you have a copy of Cubic Ninja. Other than that, stick with Rxtools for this process. This is only beneficial for o3DS users, for using browser exploits such as the ACNL RAM Editor.