During this phase the power light will flash orangeamber during firmware upgrade flash writing to memory and all other lights will be off. The green link light is flashing and so is the red record light.
Broadband Service Broadband Service Light Blinking Red
Att uverse cable box power light blinking. Restart your receiver by holding down the powerbutton for 10 seconds then pressing it again to restart. Connection error on tv or receiver and wireless access point wap not pairing. If you see a red light the batteries are still good. A red light will blink on the front of the device. If you dont see a red light or the red light is dim replace the batteries in the remote. This will usually solve around 90 percent of the basic issues that cause a freeze.
If this doesnt work check to see if the area where the receiver is has sufficient ventilation. Remove the battery tag from your att tv remote. Try resetting the box by selecting and holding the power button for 10 seconds. Restart your u verse receiver if you are seeing no video and the red blue and green lights on your u verse receiver are blinking a critical error has occurred with the u verse receiver. If you see a blinking or solid red broadband light try the steps below to get back online. Steps are listed below.
Maintain adequate space between the receiver and the tv some newer tvs have backlighting that occasionally can interfere with the remote control signal. As the device reboots the power on light behavior will happen. The cable box power green light is on. The screen is black and has a red x in the middle. The gateway will restart automatically. Restart your receiver by holding down the power button for 10 seconds then pressing it again to restart.
If you are seeing no video and the red blue and green lights on your u verse receiver are blinking a critical error has occurred with the u verse receiver. To minimize the possibility of interference make sure there is adequate space between your tv and the u verse tv receiver. Check the batteries in the remote by pressing the att buttonon the remote. Insert the power cord into the back of the device and then plug it into a wall outlet. Turn on your tv and change the input to the correct one using the input or source buttons on your tv remote.