Instructions
Ensure system requirements are met. To transfer the songs from Rock Band 1 to Rock Band 2, there needs to be enough free storage space on the Xbox 360 to hold all the songs. Power on the system and navigate to "System Settings." In the lower left corner of system settings, it will list the free space currently on the system. The number must be larger then 1.5GB for the transfer to work.
Ensure the Xbox 360 is connected to the Internet. Select "System Settings" and then select "Network Settings." Select "Test Xbox LIVE Connection." When the test finishes, it should list in the status box "Xbox LIVE is up and running." If the test fails, follow the onscreen prompts to resolve the issue.
Sign in on the Xbox live "My Xbox" menu. Once connected, insert the Rock Band 1 DVD. Select "Play Rock Band 1." Once the game starts, it will attempt to update the game. Allow the game to update.
Select "Extras" from the main menu. Then select "Export Disc." Follow the onscreen instructions. The export costs 400 Microsoft points. Points can be purchased during the export process if needed using a valid credit card or Microsoft points card. Once paid, the system will download 55 songs from Rock Band 1 to the Xbox hard drive. These will automatically show when Rock Band 2 is started.