If your phone currently has firmware between 7.0(3) and 8.3(2):Ĭisco 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). 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 6.0(2) and 7.0(2): Once you have 7.0(3) loaded skip down to the section for phones with 7.0(3) below. 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. You must upgrade to 7.0(x) before upgrading any further. If your phone currently has firmware older than SCCP v6.0(2): Note: With these models if you are going to/from various SIP or MGCP firmware versions additional intermediate firmware files may be required.
You must upgrade to 8.1(1) before upgrading any further. If your phone currently has firmware older than SCCP v8.0(10): SCCP Firmware Step Up Procedures by Model 7940/7960 Each device model has a default load specified in the Device > Device Settings > Device Defaults page of CUCM unless it is overridden by a "Phone Load Name" on the configuration page for a specific device. cop.sgn files can be loaded into CUCM through the OS Admin > Software Upgrades menu.
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. These step up procedures can be difficult to find information on and so common ones have been documented below.Ĭisco Unified IP Phone 7941G and 7941G-GE Note that sometimes you need to "step up" to the suggested firmware version by loading some number of intermediate firmwares. The tables below indicate the suggested phone firmware versions and filenames for the various CME and CUCM versions we use in the labs.
The recommended phone firmware is dependent upon the version of CME or CUCM you are attempting to connect to. 1.3 SCCP Firmware Step Up Procedures by Model.