Firmware upgrades

One of the many benefits of configuring your SIP handsets as managed SIP phones is the ability to upgrade the firmware of the handsets from the PBX's GUI, without needing to access each phone individually to upload a new rom package.

Uploading Firmware to the unit

In order to upgrade the firmware on a Managed SIP phone, the firmware .rom package must first be uploaded to the GUI. Yealink firmware packages are available on the Yealink support site.

To upload a .rom, first make sure the naming convention is correct. Some firmware packages download from the Yealink site prefixed by the model name or the release date, in a similar format to the .rom shown here:

【2019-4-4】T57W-97.84.0.30.rom

Before uploading the rom to the PBX, the file name should be normalised, to remove and release date prefixes or model numbers. So, the rom shown above should be renamed as shown below:

97.84.0.30.rom

Log in to the GUI of your device, and select Start-System Maintenance

Once on the System Maintenance page, select Files, and then expand the node for the appropriate manufacturer. Then select Option and upload:

Select Upload, and browse to choose the appropriate .rom file.

Instructing the phone to upgrade

Once an appropriate firmware package has been uploaded to the System Maintenance section of the GUI, compatible phones will present the firmware as a possible version to install. All compatible firmware packages will be presented, allowing you to upgrade a phone to the latest firmware, or even install an older version of firmware on to a phone.

Navigate to the hardware page of the GUI, and select the handset you wish to upgrade. At the very bottom of the configuration form, there is a filed named Autoprovision Firmware, which lists available, compatible firmware package versions. Select the version you wish to install. Accept, and then Review/Apply your changes.

The phone should reboot and upgrade its firmware within a few minutes, provided it is not on a call. The upgrade will occur after the call ends, should the user receive or make a call in the time between applying changes and the phone automatically rebooting.