

To avoid issues leading to configuration loss, please read through and eventually proceed as explained within this article:Īvoiding configuration corruption & crashes on firmware upgrade/downgrade ("Setenv-Script").First, check if there is another firmware version necessary to apply before moving to that respective firmware.

You should not directly install the latest firmware in case you have an older firmware version.Security Products - Firmware History Overview (FLEX, ATP, USG, VPN, ZYWALL) Older firmware versions than these can be found in this article:.The latest 3 firmware versions can be found at after logging yourself into your account and then navigating to the section called "Download Firmware".There are some basic things to consider here: Where can I find the release notes of my firmware?.

