An Xbox error code 0x8027025A is most likely an Xbox 360 update failure. As an Xbox 360 update is in the middle of downloading when this error code pops up, the player must quit the game in question in order to apply the update. If the player does not do this, the game may crash, and the Xbox 360 console will reboot. When the console reboots, the console will display another error code indicating that the update was not applied due to an installation failure.