Upgrading Firmware Via Web User Interface - Yealink SIP-T48G Administrator's Manual

Microsoft Lync Edition Administrator's Guide for SIP-T2_Series and T4_Series IP Phones
To manually upgrade firmware via web user interface, you need to store firmware to
your local system in advance.
To upgrade firmware manually via web user interface:
1. Click on Settings->Upgrade.
2. Click Browse to locate the required firmware from your local system.
3. Click Upgrade.
A dialog box pops up to prompt "Firmware of the SIP Phone will be updated. It will
take 5 minutes to complete. Please don't power off!".
4. Click OK to confirm the upgrade.
Note
Do not close and refresh the browser when the IP phone is upgrading firmware via web
user interface.
IP phones support using FTP , TFTP , HTTP and HTTPS protocols to download configuration
files and firmware from the provisioning server, and then upgrade firmware
automatically.
IP phones can download firmware stored on the provisioning server in one of two ways:
Check for configuration files and then download firmware during startup.

Automatically check for configuration files and then download firmware at a fixed

interval or specific time.
Method of checking for configuration files is configurable.
52