1. pick usb key and format it to fat as usual.
2. add folder of fsd 2/3 with whole files
3. outside folder in root create launch.ini
4. something like this should look in launch ini
[QuickLaunchButtons]
Default = usb:Freestyle 3default.xex
[settings]
nxemini = true
pingpatch = true
5. double check
6. insert usb to xbox and restart it.
7. once you launch to fsd : either from fsd file manager, samba or ftp edit your launch.ini and set it correctly
look for something like this in launch.ini :
; Default is what loads when you hold no buttons
; leave this blank if you want NXE as default
Default = Hdd:DATAFreestyle 3default.xex <-- this hows mine is set.
if as u mentioned something about dashlaunch well remake launch ini lol
8. simple as that copy new folder of fsd(with instalation files) to any location, if you wish delete old folder edit launch ini.
9. restart xbox but make sure you double check.
10. good luck
ps. you can go to dash launch and edit your default.xex location manualy just by pointing where it is. incase you will have problems starting from usb.