Updated UZB to 5.7 now all nodes are dead!

[Sireone]

I recently updated my Z-Wave.me UZB firmware from 5.4 to 5.7 using Z-Way Expert UI, now all my nodes in Home Assistant Z-Wave JS UI are showing as dead and cannot be pinged. Any idea why? The controller shows the new version in Z-Wave JS UI and all nodes are there, just dead and debug shows the following error for each node:

2024-04-07T15:07:24.402Z CNTRLR [Node 036] ping failed: The node did not acknowledge the command (ZW0204)

[Sireone]

So in troubleshooting, it seems that after the firmware update, it defaults to EU frequency. I simply just loaded up Z-Way and set it back to US and boom, all my devices were communicating again. Hope this helps anyone whoi runs into this issue.

[freshcoast]

In the ZUI settings you can configure the region so that never happens.

[Sireone]

Wow, great to know! Seems this is blank by default!