Originally Posted by Lord Flatus
I use two USB sticks, one with my normal Xbox Live gamertag and Rock Band title update 5, the other with a different non-Gold gamertag and RB TU4 on it. I keep all my real DLC and exports on the hard drive and put all the customs on the second stick with TU4. That way I have separate save files.
I did something similar, except that I didn't see a reason to use a different profile than my normal online one. I copied my save file and song cache to one stick, and have another save file, song cache, TU4 and the customs on the other stick (and some hardware settings file the Score Hero instructions told me to copy). I put the first stick in when I want to play the game without customs and start the GoD version, which has TU5 built in. When I want to play with customs I put the 2nd stick in and start the game from disc. When I start the disc it wants to install the update and I decline, at which point it logs me out of Live and continues otherwise normally.
I suppose using separate profiles there would be less danger of accidentally deleting a save file if the wrong stick was installed.
BTW, people who want to try this should use the bulkiest flash drives possible. The 360's front USB connections are recessed, making the smaller drives more difficult to plug in. I have a tiny 16 GB drive (like this
) that I couldn't find and I'm glad. I bought one of these
and its probably the shortest stick I'd want to deal with; the rear end of it only barely sticks out. (It doesn't need anything like 16 GB for a couple of save files, but I used the Xbox customize option to minimize the storage reserved for Xbox use so that I can use the rest for other things if I want).