Yealink SIP-T42G User Manual page 181

How to reboot the phone?
To reboot the phone via phone user interface:
1. Press Menu->Settings->Advanced Settings (default password: admin).
2. Press
The LCD screen prompts "Reboot the phone?".
3. Press the OK soft key to reboot the phone.
Note Any reboot of your phone may take a few minutes.
How to upgrade firmware?
To upgrade firmware via web user interface:
1. Click on Settings->Upgrade.
2. Click Browse... to locate the firmware from your local system.
3. Click Upgrade to upgrade the firmware.
The browser pops up the dialog box "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 upgrading.
SIP-T42G IP phones can be also upgraded from the Skype for Business Server. For more
or to scroll to Reboot, and then press the Enter soft key.
Troubleshooting
171