To fix bugs or add new features, the phone may need to be upgraded to a newer firmware version.
Applicable products: all phone models from our company
Applicable versions: all firmware versions supported by the corresponding models
① One BX4U phone connected to a switch and able to obtain an IP address automatically.
② One configuration PC connected to the same switch, with network access to the phone.

Log in to the official website and download the correct firmware version for your phone.
Notes: ① The firmware package is provided as a compressed file and does not need to be extracted.
② The upgrade file must be in .z or .zip format.
③ If the required version is not available on the official website, please contact technical support.
On the phone LCD screen, tap “Menu” — “Status” to view the phone IP address.


Log in to the phone through the web page, then go to “System” -- “Upgrade” -- “Software Upgrade”. Select the required firmware file and click “Upgrade”. Please note that the upgrade file must be in .z or .zip format.