Zywall USG FLEX Series & ATP Series - V5.42Patch 0 Firmware Release

Zyxel_Melen

Hi @mMontana ,

Thank you for the kind words to the development team, and more importantly, thank you for raising a very fair concern.

We understand that confidence needs to be built on facts, not assumptions. Here is what we can share to help you make an informed decision:

1. The scope of Patch 1 is deliberately narrow: it addresses a single root cause — an abnormal FQDN object query that could trigger unexpected device reboots. This was the core issue behind the Patch 0 problems.
2. During internal validation, we identified a separate HA-related upgrade issue affecting ATP500, ATP700, ATP800, USG FLEX 500, and USG FLEX 700. Rather than rushing those out, we excluded them from this release. They will be covered in Patch 2, planned for early March.
3. We understand that "less than 6 hours" is not enough time for anyone to feel confident. If you prefer to wait and observe community feedback for a few days before upgrading, that is a perfectly reasonable approach — especially since your current device has been running stable.

We value your continued feedback and your commitment to this community.