If your phone is malfunctioning or requires updates you or your phone system administrator may want to perform one of the following:
Restarting: This will bring the base station to its last configured state.
Upgrading the firmware: Firmware is the software that loads when the phone is started and controls its functionality. Upgrading it to a newer version, when one is released, may resolve or improve phone performance issues.
Factory reset: This erases the current configuration and applies the original configuration the phone was shipped with from the factory. You can reset the the base station or each individual handset.
Restarting
Restarting the base station is usually a safe and easy method to resolve functionality issues. However, you may want to consult your phone system administrator first to make sure the issues are not related to network problems or other external causes.
Also, since restarting the base station will cause any active or holding calls to be disconnected, you should alert any users connected to the base station before performing the reset. An easy way to do so is with the handset intercom feature.
To restart the base station via the handset:
- Press
to enter the main menu. - Select Settings>System Settings>Base Restart.
- Enter the system PIN (default: 0000), and then press the Done soft key.
After the above steps, the registration LED and network status LED go out simultaneously. After a period of time, the LED indicators will illuminate solid green again when the base station restarts successfully.
Base restart is also available from the web user interface at the path Settings>Upgrade.
Firmware Upgrade
You can update the firmware on either the base station or the handset. Firmware files can be downloaded from the Yealink support portal. The file should be stored on a computer, mobile device, or network location that can be accessed by the web interface.
Before upgrading to the latest firmware you should read the related firmware notes and possibly consult with Yealink's support to ensure there are no compatibility issues or other potential conflicts. If such issues or conflicts do happen after an upgrade you may need to downgrade to a previous firmware version or perform a factory reset.
Checking the Current Firmware Version
You can check the current firmware installed on the base or a handset to see if an update is indeed required.
To check the base station firmware via the handset:
- Press to enter the main menu.
- Select Status>Base.
- The LCD screen displays status information of the base station including the firmware version and IPv4 or IPv6 status, MAC address, device certificate status, RFPI and network information.
- You can press
or 
to scroll through the list and view the status information.
You may need to provide some of this information, besides the firmware version, to your phone system administrator for additional phone support or maintenance.
To check the handset firmware via the handset:
- Press to enter the main menu.
- Select Status>Handset.
- The LCD screen displays the status information of the handset including the firmware version and model, hardware version, IPUI code, SN code and area.
- You can press or to scroll through and view the status information.
You may need to provide some of this information, besides the firmware version, to your phone system administrator for additional phone support or maintenance.
Upgrading the Firmware
When upgrading the firmware it is important that you do not close or refresh the browser running the web user interface. Also, during the upgrade, you must not close any network connections on the device running the web user interface or power the device off.
Upgrading base and handset firmware via the web user interface:
- Click on Settings>Upgrade.
- If updating the base station firmware:
- Click Browse next to the Select and Upgrade Firmware field to locate the required firmware file on your local system.
- Click Upgrade next to the Select and Upgrade Firmware filed.
- A dialog box pops up to prompt “Firmware of the SIP DECT phone will be updated. It will take 5 minutes to complete. Please don't power off!”.
Click OK to confirm the upgrade.
- Click Browse next to the Select and Upgrade Firmware field to locate the required firmware file on your local system.
- If updating the handset firmware:
- Click Browse next to the Select and Upgrade Handset Firmware field to locate the required firmware file on your local system.
- Click Upgrade next to the Select and Upgrade Handset Firmware field.
- A dialog box pops up to prompt “Handset Firmware of the SIP DECT phone will be updated. It will take 5 minutes to complete. Please don't power off!”.
Click OK to confirm the upgrade.
- Click Browse next to the Select and Upgrade Handset Firmware field to locate the required firmware file on your local system.
Factory Reset
It is advisable you contact us (if you have an account with us) or your phone system administrator before attempting a factory reset to see if the issues with your phone may be resolved without it and to ensure your phone can be properly provisioned and configured if a reset is indeed required.
You can factory reset either the base station or each individual handset.
Factory Reset — Base
You can reset the base station from the either the base station or a handset. Reseting from the base station will clear all settings while resetting from a handset will keep the system PIN and handset registration.
To reset the base station from the base station:
- Disconnect the power adapter.
- Long press the paging key and reconnect the power adapter.
- When base station finishes resetting, the power indicator LED, network status LED and registration LED illuminate in sequence.
- System PIN and all individual settings are reset to factory defaults. Handset registrations will also be cleared after base station reset.
To reset the base station via the handset:
- Press to enter the main menu.
- Select Settings>System Settings>Base Reset.
- Enter the system PIN (default: 0000), and then press the Done soft key.
- Highlight Reset to factory, and then press the OK soft key.
- The resetting process may take a few minutes. Do not power off until the base station starts up successfully.
The power indicator LED and network status LED on the base station slow flash in sequence during the resetting process. Indicator LEDs on the base station illuminate solid green after startup.
Resetting the base station will will clear all individual settings (e.g., directory and account registrations). Handset registrations and the system PIN will not be reset to factory defaults.
You can also reset the base station via the web user interface at the path: Settings>Upgrade.
Factory Reset - Handset
You can reset individual settings that you have made on the handset. Resetting handset will not overwrite settings of directory, call history, voice mail and the handset registration to the base station. Other customized settings on the handset will be reset to factory settings after handset reset.
To reset the handset via the handset:
- Press to enter the main menu.
- Select Settings>System Settings>Handset Reset.
- The LCD screen prompts “Reset handset to default?”.
Press the Yes soft key to reset the handset or the No soft key to cancel.