Category Archives: SIP-T48S

manually download phone firmware for 3cx phone system

You can download the latest supported phone or handset firmware for 3CX from here: https://www.3cx.com/support/phone-firmwares/

troubleshooting Yealink WF50 Wi-Fi USB dongle

The Yealink WF50 is only compatible with the following phones

  • Yealink SIP-T27G
  • Yealink SIP-T41S
  • Yealink SIP-T42S
  • Yealink SIP-T46S
  • Yealink SIP-T48S
  • Yealink SIP-T53

The Yealink phone must also be running version 84 firmware otherwise the WF50 USB Dongle will not be detected by the phone.

At time of writing the following firmware should be running on the phone

  • Yealink SIP-T27G requires firmware 69.84.0.10 or 69.84.0.15 or 69.84.0.35
  • Yealink SIP-T41S requires firmware 66.84.0.10 or 66.84.0.15 or 66.84.0.35
  • Yealink SIP-T42S requires firmware 66.84.0.10 or 66.84.0.15 or 66.84.0.35
  • Yealink SIP-T46S requires firmware 66.84.0.10 or 66.84.0.15 or 66.84.0.35
  • Yealink SIP-T48S requires firmware 66.84.0.10 or 66.84.0.15 or 66.84.0.35
  • Yealink SIP-T53 requires firmware 95.84.0.10 or 95.84.0.15 or 95.84.0.20 or 95.84.0.30 or 95.84.0.35

Firmware can be downloaded directly from Yealink here:

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

If you are running 3CX then you can download the latest supported firmware from here:

https://www.3cx.com/support/phone-firmwares/