Also, check the link in the Admin's signature ^^^^^ there is a link to a guide on how to update your machine's kernel. Also, in order to launch a different dash at boot check your configuration of paths in your launch.ini file, assuming you installed dashlaunch. Here is a sample of my paths:
[Paths]
BUT_A = Hdd:\F3Rev775\default.xex BUT_B = BUT_X = IntMu:\Content\0000000000000000\C0DE9999\00080000\C0DE99990F586558 BUT_Y = Start = Back = LBump = RThumb = LThumb = ; Default is what loads when you hold no buttons ; leave this blank if you want NXE as default Default = Hdd:\Aurora 0.5b - Release Package\Aurora.xex