How to download the latest security gateway firmware:
To obtain the latest firmware for ZLD4.25 or above, please sign into myZyxel to proceed. Customers can still download the ZLD4.2 or earlier version at the Global Web Site. Please read release note carefully before updating firmware or installing software.
Thanks for your interests.
Please read Release Note carefully before updating firmware or installing software and please note Zyxel is not responsible for damages if firmware, software or other files are not installed according to the release note instructions. You can click to download release note.