my xbox 360 slim wont download system update

You can use the technique outlined on the full troubleshooting page to retrieve an error code from your console to determine what the specific cause of your RROD is.

If the RROD is already plaguing your Xbox, and your console is no longer covered by Microsoft's warranty, there is hope yet. Alternatively, use an external fan to help circulate air across the device. If your Xbox begins to overheat, turn the power off and allow it to cool for at least an hour before continuing play. To keep your Xbox 360 from being affected by the Red Ring of Death, keep it in a well-ventilated area and make sure the cooling vents are free from obstruction. There are various fixes for the RROD, which include replacing the high-stress x-clamp, reflowing the GPU's solder connection, and also replacing the heat sink in older models with Microsoft's updated Zephyr heat sink. A flaw in the design of the heat sink allows the motherboard to warp in the area around the chip, which causes the chip to lose contact with the board. The most common issue is a cracked or cold solder joint underneath the GPU on the motherboard. Most, if not all, three-light errors in Xbox 360 consoles are related to overheating. The RROD is characterized by three red lights creating a 3/4 circle around the power button. The Red Ring of Death has become an infamous sign of a malfunctioning Xbox 360 since its launch.

My xbox 360 slim wont download system update