Yealink SIP-T27P [98/841] Upgrading firmware via web user interface

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series IP Phones

IP Phone Model

Associated Firmware Name

Firmware Name Example

SIP-T46G

28.x.x.x.rom

28.80.0.60.rom

SIP-T42G

29.x.x.x.rom

29.80.0.60.rom

SIP-T41P

36.x.x.x.rom

36.80.0.60.rom

SIP-T29G

46.x.x.x.rom

46.80.0.60.rom

SIP-T27P

45.x.x.x.rom

45.80.0.60.rom

SIP-T23P/G

44.x.x.x.rom

44.80.0.60.rom

SIP-T21(P) E2

52.x.x.x.rom

52.80.0.60.rom

SIP-T19(P) E2

53.x.x.x.rom

53.80.0.60.rom

Note

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

You can download the latest firmware online:

http://support.yealink.com/documentFront/forwardToDocumentFrontDisplayPage.

Do not unplug the network and power cables when the IP phone is upgrading firmware.

Do not close and refresh the browser when the IP phone is upgrading firmware via web

user interface.