[USGFLEX50] Upgrade Firmware failed

MatteoDS · July 2023

Good morning,
I have to update the firmware of a USGFlex50 from version 5.30 ABAQ.0 to 5.36 ABAQ.2, but every attempt is unsuccessful.
I've tried updating via cloud, via ftp, manually.
I have no error, simply the firewall does not complete the procedure. Even restarting the firewall I always have version 5.30 ABAQ.0.
How can I fix? Thank you
Matteo

PeterUK · July 2023

You can download 5.31 and 5.32 here

unplug from WAN reboot then upgrade might help

https://support.zyxel.eu/hc/en-us/articles/360013941859-Security-Products-Firmware-Overview-FLEX-ATP-USG-VPN-ZYWALL-

MatteoDS · July 2023

I tried upgrading to 5.31 and 5.32 (with reboot), but the firewall won't reboot and the 5.30 firmware remains.

Zyxel_Jeff · July 2023

Hi @MatteoDS

You could refer to those articles:

(1). What should I do if the device failed to be upgraded to the latest firmware?

(2). Recovery steps if you cannot update the firmware in the running partition

Thanks.

[USGFLEX50] Upgrade Firmware failed

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