OK, dude, it sounds like you flashed the right bios. When you had the banks switched to "on on off off off" (or you should have), you saved it to a portion of the chip. You didn't flash over your backup, it should still be there in case you f-up again.
In short, if you can see the screen and you get the "Rox my Box" logo, then your in. You have sucessfully installed the x3.3294.
Now, go back to the Auto-Installer folder that you unRared on your computer. There should be a lone .iso image that is labeled "Auto-Installer.Deluxe.v2.11.FINAL". Burn that straight to a DVD. Put it in the CD tray of the xbox. If AID doesn't start automatically, then chose 'cold boot to dash', or similar from bios menu. This should load the DVD.
Once on, it should be easy to figure out from there, go to "install dashboards", "install C drive dashboards", and then whatever dash board you want. There is a whole list. For some reason Avalaunch would not install, so I chose Evo. The menu is really easy to figure out.
Let me know if you got it.