I have done soft reboot for the Plus 1PM, used similar static IP adress, and put DNS server. All same settings as in the Plus 1, only different IP address. I'm an IT-technician. Yes, normally I have blocked internet to them, I have them in their own VLAN and routed the traffic to Home Assistant. When I need to update them I connect wifi2 to a connection that has internet and turn off wifi1. And as said, I did the all same to the first two that worked fine. I still have to go and physically try to reboot, need to plow some snow first. The Plus 1PM is located in an outbuilding that I currently can't access. It's inside and in a warm enclosure.
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