It doesn't matter what dash version you have or if you have left overs from a previous softmod.Downside of this is that you can't use any multiboots that require the msdash or livedash.Start the 'James Bond 007: Agent Under Fire' Game (the original of course) once in the game and it's loaded select the option to start a New game, play until the game movies finish then quit the game and then load the saved game.Make sure it loads from the hard-drive and if needed delete any existing save games that you may have had before you copy the game save exploit over.If you don't have an internet connection you can force a dash update with a recent Live enabled games by trying to launch a 'Live' version of the game remember the installer will not install if the Dash version is not correct so don't worry about your Xbox getting hosed if the Dash is the wrong version.I'm using the 007 installer for reference here the other may be slightly different so make sure you check the included readme file.
This option will remove the exploit files and lets you select what parts of the xbox you want to restore from a rescue disc.
The save game should start to load, after a wait of about 10 seconds it should load the the installer menu and you'll see the first set of options. This is the most important file to keep when you're doing softmods.
It contains all kinds of specific information about your xbox.
ONLY use this option if you already installed this package but somehow deleted and/or replaced the Installer.
Other menus are available but for the most part are for the advanced features after you've completed the install process full details of each option is discussed in the included readme file. The final step will be after a reboot and the installer will ask to create and start the Virtual drive C: once this is step is complete you can enjoy your Xbox and delve into the advanced menus and Multi boot options as discussed in the features section above.You can do this simply by choosing the 'Live' options and select 'Account recovery' this updates your dashboard automatically and once finished will ask you for details of your account to continue, just quit as you've accomplished the task of updating the Dashboard.