I have numerous Kasa devices on my IOT network. Older ones work great, the VLAN has no internet access. I recently purchased some additional HS220's that came with 1.0.10 of the firmware and they are constantly rebooting every 10 minutes. They will go unresponsive, and a minute later I'll get a DHCP request from the device and it is back online. If I let them have access to the net, this rebooting stops.

Reading about this both here, on Home Assistant forums, and on Kasa's forums, this is apparently some new watchdog in newer firmware that if it cannot reach the cloud, it will do this.

What I have seen others say resolved this is to unbind the switch from the cloud:
kasa --host 192.168.0.1xx command --module cnCloud unbind

And indeed after running this several times with user/pass I get this (as well as the app shows remote access disabled):
{'err_code': -8, 'err_msg': 'not bind yet'}")

However my new HS220's continue to reboot every 10 minutes. I've DNS rewritten the cloud URL's to a local server so they see something vs an unreachable, still reboots.

Any thoughts? Any way to back the firmware down to a version that doesn't do this?