USG Flex 700H - i need to revert to firmware 1.32 ASAP

DanniKool

Firmware 1.35 is too unstable for us - i need to revert back to 1.32 ASAP. How do i do that?

Zyxel, please PM me.

PeterUK

You can show the other boot slot

How to display the standby firmware partition on GUI? — Zyxel Community

Then select the standby and reboot to it

DanniKool

Thanks Peter.

Tried rebooting the standby partition with firmware 1.32- then it bootet with factory default settings and i could not load my config file from v1.35. We have 2 devices in HA.

I'm so much struggling with inbound connections being dropped to services that we host. Connections can be restored when i force a reboot with failover to secondary device.

Zyxel_Tina

Hi @DanniKool,

Regarding your note, "I could not load my config file from v1.35", this is because new features and enhancements introduced in the newer firmware can cause configuration incompatibility. This is also why we generally do not recommend downgrading.

Since you mentioned that the secondary device is working, we suggest backing up its configuration and restoring it to the primary device (the one currently running in factory default settings).

Additionally, as you initially mentioned that v1.35 has been too unstable for you, could you please share more details on what specific issues or symptoms you have experienced?

As a reminder,

• Before switching firmware versions, always make sure to back up your configuration to prevent data loss.
• Whenever an issue occurs, we recommend collecting a diagnostic info file so it can be analyzed effectively.

DanniKool

Hi Zyxel_Tina

I'm communicating with Zyxel_Jeff in a PM regarding our issues. I've been given a beta firmware, from where i could narrow the issue down to DoS, which has been disabled for the moment.