Instructions
Switch your Internet connection from a wireless to a wired Internet connection. Wired connections provide faster download speeds than wireless and you should see immediate improvements.
Contact your Internet provider and opt for a faster Internet connection. Although this is going to increase your monthly billing statement it does provide the best means of speeding up download speeds.
Download one program or demo at a time while using the XBox 360. If you download multiple games at the same time it slows down your overall download speed.
Avoid using your computer or any other devices on your home network. All of the Internet connections draw on the same feed. If you are using other devices while connecting to the Internet it draws down your download speed, increasing the time it takes to download the XBox 360 content.