The 7970 IP Phone is stuck at the logo screen or otherwise is locked up after firmware upgrade attempt

[TCC_2]

Core Issue

This issue is documented in Cisco bug ID CSCed37125.

The issue consists of one of these conditions:

• The date is January 1st, 2004.
• The date is on or after February 29th, 2004.

This issue can also occur due to Cisco Bug ID CSCef22943. With this bug, a 7970 IP Phone becomes inoperable after a software upgrade, and the following conditions are observed:

• The Cisco logo appears on the screen with a check box in the bottom left corner.
• The    Line LEDs blink from top to bottom in green.
• The phone does not respond to any user input.

Resolution

To work around this issue, perform these steps:

1. To download the new phone load, upgrade to Phone Load 5-0-3-0s or later and power cycle the 7970s.

   The 5-0-3s load is available to registered Cisco.com users at Software Download: Cisco IP Phone FW 7900 Series (NON SIP).

   Note: The file name is cmterm-7970-sccp.5-0-3.exe.

2. If the phone hangs on boot up and does not upgrade to 5-0-3-0s, reset the phone to the factory defaults.

   Note: The phone must be on a network providing an IP address and TFTP server address using DHCP. The  alternate TFTP setting is erased when using this procedure, requiring the TFTP server address to be provided by a DHCP server to get the phone upgraded.

   Perform these steps:

   1. Power off the phone.
   2. Hold down the number sign (#).
   3. While holding down the number sign (#), connect an AC adaptor to the phone.
   4. Continue to hold down the number sign (#) until the line buttons blink amber.
   5. Release the number sign (#).
   6. Enter: 1 2 3 4 5 6 7 8 9 * 0 #.
   The lights should change color from amber to red. The phone is now resetting to factory defaults.

If the procedure does not work, perform it again with a different number sequence:

1. Power off the phone.
2. Hold down the number sign (#).
3. While holding the number sign (#), connect an AC adaptor to the phone.
4. Continue to hold the number sign (#) until the line buttons blink amber.
5. Release the number sign (#).
6. Enter: 3 4 9 1 6 7 2 8 5 0 * #

The lights should change color from amber to red. The phone is now resetting to factory defaults.