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A 7940/7960 IP phone registered to CME cannot load the new 5.3 signed version. It fails with the "File not Found" error message

Core Issue

Before upgrading to the signed version of the 5.3 IP phone load, the phones must be loaded with the unsigned version.

Note: The unsigned version of IP phone load has a .bin extension. The signed load has a .sbn extension.

For more information on signed and unsigned versions of IP phone load, refer to the Image Authentication and Signed Binary Files section of Cisco IP Phone 7960, 7940, and 7910 Release Notes for Firmware Release 5.0(3) for Cisco CallManager Versions 3.1, 3.2, and 3.3.

Resolution

To upgrade 7960 and 7940 IP phones to a secure phone load, perform this procedure:

  1. Copy a 5.0 phone load that has a .bin extenstion onto the router flash (For example, P00305000300.bin), as shown:

        !

        tftp-server flash:P00305000300.bin

        !

        telephony-service

        load 7960-7940 P00305000300

        !

       
  2. Reset the phone so that it picks up the 5.0 bin file.

  3. Check the firmware version running on the phone, and ensure that the phone does pick up the 5.0 load.

  4. Issue this command:

        !

        no tftp-server flash:P00305000300.bin

        !

    You may delete this file from Flash, since it is not required any more.

  5. Copy a 5.0 secure phone load that has an .sbn extension onto the router Flash, such as P00305000300.sbn, as shown (P00305000301.sbn is a better option since the phone firmware status does not show the file extension. Therefore, you are not able to confirm what load is running on the phone.):

        !

        tftp-server flash:P00305000300.sbn

        !

        telephony-service

        load 7960-7940 P00305000300

        !

  6. Reset the phone so it picks up the 5.0 sbn file.

  7. Check the firmware version running on the phone and ensure the phone does pick up the 5.0 .sbn load.

    To download both the unsigned and signed versions of IP phone loads, refer to Software Download: Voice Software.

For procedure for how to upgrade Cisco IP phone firmware with Cisco CallManager Express, please refer "Upgrading IP Phone Firmware with CCME"


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