Note: Do not unplug the network and power cables during the IP phone firmware upgrading process. Also do not close/refresh the browser when the IP phone is upgrading firmware via web user interface.
Yealink T26 Firmware Update
Note: Do not unplug the network and power cables during the IP phone firmware upgrading process. Also do not close/refresh the browser when the IP phone is upgrading firmware via web user interface.
Yealink T26 Firmware Update
IP phones support the use of FTP, TFTP, HTTP, and HTTPS protocols to download configuration files and firmware from provisioning server, and then upgrade firmware automatically. You can configure the way your IP phones download firmware stored on provisioning server in one of two ways:
You can upgrade your base station to the latest firmware version. The latest firmware version not only improves the performance of the base station, but also provides more features compared to the previous version. This section provides you with instruction on upgrading the base station via web user interface (Refer to Yealink W52P IP DECT Phones Auto Provisioning Guide for information on upgrading via auto provisioning).
Once the base station firmware has been successfully upgraded, the base station reboots automatically. The handset will perform an auto registration to the base station. You can check the firmware version of the base station using the handset. For more information, refer to Yealink_W52P_User_Guide_V40_1
You can upgrade W52x handset firmware via a USB tool or over the air (OTA). Upgrading handset firmware via the USB tool (developed by Yealink), you need to purchase a USB cable in advance, and then upgrade the handset firmware one by one.
Upgrading handset firmware via OTA means that the handset firmware can be upgraded through a wireless DECT connection (L2CAP). So a USB cable does not have to be plugged to the handset for firmware upgrade. OTA enables the distribution of new firmware to the subscribed handsets.
Overview: Also known as a Recovery Mode Update, the TFTP process can be used to save what can be seen as an otherwise dead phone. This process is most useful in the scenario that a phone either gets stuck in a boot loop, or stays on a Welcome Initializing...Please Wait screen. However, it can also be useful on a device where a factory reset does not seem to be resetting the device correctly. If you find that your device fits into any of these categories, the TFTP recovery can be performed; it will reflash the firmware on the device in the case of a corrupt firmware and if successful, will allow your device to fully boot again.
You will be able to find the necessary recovery files for your device at the following URL Yealink Support. You will need to provide the proper .rom file renamed. So for example, if your device is a T46U you would rename your rom file to T46U.rom. All rom files can be obtained from the yealink website.
NOTE: Before upgrading the firmware, refer to Preferred Phones to identify the most current firmware version. Use the most current firmware to guarantee all features function properly.
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