6921 IPPhone does not register after the firmware update

Hi all

We try to update the firmware 6921 phones.

We have CUCM system version: 8.0.3.20000 - 2

Current firmware on the phones of SCCPS 6921 is SCCP69xx.9 - 0-3-0.

We tried to upgrade to SCCP69xx.9 - 4-1-3 SR 1, but the phone will not register with this firmware.

As we modernize cucm to 10.5 (1), we woud would have all put phones upgraded to the version of the firmware shipped with cucm 10.5 (1) before the cut above miniimize downtime.

Any suggestions will be helpful on how to solve this problem.

Thanks in advance

Hi Ravi,

I guess you have to download the Pack of the device if you want to use 9.4 (1) SR1

9.4 release notes (1) SR1 say that

Before installing the version, check that the device Package Cisco Unified Communications Manager is installed

http://www.Cisco.com/c/en/us/TD/docs/voice_ip_comm/cuipph/6900_series/firmware/9-4-1-SR1/Release_Notes/P690_BK_6AA8901D_00_6900-series-release-notes-9_4_1sr1.PDF

Now if I see the Compatibility Pack device matrix, it's for CUCM 8.5 (1), but in your case, call Manager version is 8.0.3.20000 - 2

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/compat/matrix/CMDP_BK_CCBDA741_00_cucm-device-package-compatibility-matrix/CMDP_BK_CCBDA741_00_cucm-device-package-compatibility-matrix_chapter_00.html#CMDP_RF_C6E2BC42_00

regds,

Aman

Tags: Cisco Support

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