Upgrading Firmware - Yealink SIP-T4X Administrator's Manual

This chapter provides information about upgrading the IP phone firmware. Two methods
of firmware upgrade:
Manually, from the local system

Automatically, from the provisioning server

The following table lists the associated firmware name for each IP phone model (X is
replaced by the actual firmware version).
IP Phone Model
Note
You can download the latest firmware online:
http://www.yealink.com/DocumentDownload.aspx?CateId=142&flag=142.
Do not unplug the network and power cables when the IP phone is upgrading firmware.
Upgrade via Web User Interface
To manually upgrade firmware via web user interface, you need to store the firmware to
the local system in advance.
To upgrade firmware manually via web user interface:
1. Click on Settings->Upgrade.
2. Click Browse.
3. Locate the firmware from the local system.
4. Click Upgrade.
Associated Firmware Name
SIP-T48G
SIP-T46G
SIP-T42G
SIP-T41P
35.x.x.x.rom
28.x.x.x.rom
29.x.x.x.rom
36.x.x.x.rom

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