Cisco IP Telephony

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Phone Firmware

The recommended phone firmware is dependent upon the version of CME or CUCM you are attempting to connect to. The tables below indicate the suggested phone firmware versions and filenames for the various CME and CUCM versions we use in the labs. Note that sometimes you need to "step up" to the suggested firmware version by loading some number of intermediate firmwares. These step up procedures can be difficult to find information on and so common ones have been documented below.

For CME 7.1

Device Model Firmware Version Firmware Files
Cisco Unified IP Phone 7940G and 7960G SCCP v8.0(5) P00308000500.loads*

P00308000500.sb2

P00308000500.sbn

Cisco Unified IP Phone 7941G and 7941G-GE SCCP v8.4(2) apps41.8-4-1-23.sbn

cnu41.8-4-1-23.sbn

cvm41sccp.8-4-1-23.sbn

dsp41.8-4-1-23.sbn

jar41sccp.8-4-1-23.sbn

SCCP41.8-4-2S.loads*

term41.default.loads

term61.default.loads

Cisco Unified IP Phone 7942G and 7962G SCCP v8.4(2) jar42sccp.8-4-1-23.sbn

apps42.8-4-1-23.sbn

SCCP42.8-4-2S.loads*

cnu42.8-4-1-23.sbn

cvm42sccp.8-4-1-23.sbn

dsp42.8-4-1-23.sbn

term42.default.loads

term62.default.loads

When configuring CME for the firmware for use with each device the load command should use the file indicated by the asterisk (*) in each list of files.

For CUCM 8.6

Device Model Firmware Version Firmware Files
Cisco Unified IP Phone 7940G and 7960G Signed SCCP v8.1(2) cmterm-7940_7960-sccp.8.1.2.cop.sgn
Cisco Unified IP Phone 7941G and 7941G-GE Signed SCCP v9.2(1) cmterm-7941_7961-sccp.9-2-1.cop.sgn
Cisco Unified IP Phone 7942G and 7962G Signed SCCP v9.2(1) cmterm-7942_7962-sccp.9-2-1.cop.sgn

Note that CUCM 8.6 uses certificate signed firmware files (*.sgn)

SCCP Firmware Step Up Procedures by Model

7940/7960

7941/7961

If your phone currently has firmware older than SCCP v6.0(2):

You must upgrade to 7.0(x) before upgrading any further. Cisco suggests upgrading to 7.0(3) as that will provide a faster upgrade to 8.x(x) than an older 7.0(x) would but any 7.0(x) will work. Once you have 7.0(3) loaded skip down to the section for phones with 7.0(3) below.

If your phone currently has firmware between 6.0(2) and 7.0(2):

You can upgrade directly to 8.5(2) but be aware that the upgrade will take about twice as long as usual.

If your phone currently has firmware between 7.0(3) and 8.3(2):

Cisco changed the signing certificate on the firmware, before you can load newer versions you need to upgrade your phone to at least 8.3(3) but it is suggested that you upgrade to 8.5(2). Once you have something between 8.3(3) and 8.5(2) loaded you will be able to continue upgrading to the latest version.

7942/7962

If your phone currently has firmware older than SCCP v6.0(2):

You must upgrade to 7.0(x) before upgrading any further. Cisco suggests upgrading to 7.0(3) as that will provide a faster upgrade to 8.x(x) than an older 7.0(x) would but any 7.0(x) will work. Once you have 7.0(3) loaded skip down to the section for phones with 7.0(3) below.

If your phone currently has firmware between 6.0(2) and 7.0(2):

You can upgrade directly to 8.5(2) but be aware that the upgrade will take about twice as long as usual.

If your phone currently has firmware between 7.0(3) and 8.3(2):

Cisco changed the signing certificate on the firmware, before you can load newer versions you need to upgrade your phone to at least 8.3(3) but it is suggested that you upgrade to 8.5(2). Once you have something between 8.3(3) and 8.5(2) loaded you will be able to continue upgrading to the latest version.

Useful References