Started from the ZLD 4.20 firmware version, the firmware upgrade service was introduced to help customers to easily and safely keep the firmware of their Zyxel devices up-to-date. In this document, you will learn about the firmware upgrade service and how you would benefit from it. You will see how Zyxel keeps ZLD 4.20 and ZLD 4.25 firmware upgrade service running while the lifetime firmware upgrade service is activated by default after ZLD 4.25 patch 1.
Firmware upgrade is a supportive service that allows you to receive notification of the latest available firmware and to quickly download via either device GUI or myZyxel. The automatic, complimentary firmware upgrade service is built into your device with firmware V4.20 or above as soon as it is registered on myZyxel.
No, this is a complimentary service and is available once the device is registered on myZyxel.
It's always your best interest to use the latest firmware. With the latest firmware, you can enjoy new feature enhancements, bug fixes and solutions that protect your network from security vulnerabilities.
No, this is a complimentary service and is available once the device is registered on myZyxel.
No, only the specific firmware file for the registered model can be downloaded. This is to ensure our customers receive correct firmware files. For Zyxel Partners, please contact to your local support for further assistance.
Starting from the firmware version ZLD 4.25 and above, you will not be able to download the firmware files directly from Zyxel's corporate website; the link will be redirected to the myZyxel sign-in page and you'll find matching registered devices under your account.
ZLD 4.20 firmware versions are still available for download on the Zyxel corporate website. There are the latest three versions available:
The ZLD 4.15 does not support firmware upgrade service. To ensure specific requirements are being managed, please contact the support team before updating the firmware.
By registering a myZyxel account and your products, you will enjoy the following benefits: