USG FLEX H Series - V1.35 Patch 2 Firmware Release

Zyxel_Melen

Zywall USG FLEX H Series Release Note 

September 2025

Firmware Version on all models

• Please use the cloud firmware upgrade function to upgrade USG FLEX H Series

USG FLEX H Series	Firmware Version
FLEX50H	V1.35(ACLO.2)C0
FLEX50HP	V1.35(ACLP.2)C0
FLEX100H	V1.35(ABXF.2)C0
FLEX100HP	V1.35(ACII.2)C0
FLEX200H	V1.35(ABWV.2)C0
FLEX200HP	V1.35(ABXE.2)C0
FLEX500H	V1.35(ABZH.2)C0
FLEX700H	V1.35(ABZI.2)C0

New Feature and Enhancements

N/A

Bug Fix

1. [eITS#250800776] Fix the behavior issue when Nebula is selected without network connectivity and without completing the initial setup wizard.

Please refer to the Download Link for more details.

SoluzioniDigitali

Does this patch fix the DHCP breaking bug from the v1.35([…].1) update?

Zyxel_Melen

Hi @SoluzioniDigitali

No, V1.35 patch 2 firmware doesn't inculd the DHCP server related bug fix. Is there anything I can help you?