Shelly TRV fw 2.1.9 released

How do I get back to version 2.18, version 2.19 only shows "Pending connection", after connecting to my network.

I can ping the address ok.

Frida you can downgrade with this URL

http://<shellyip>/ota?url=http://archive.shelly-tools.de/version/v2.1.8/SHTRV-01_build.gbl

But in the release notes they say the device can stop Working and needs an Factory reset. Maybe you'll try this first.

Shortly after there was a new release version 2.20 which I installed. After the factory reset, I had to connect to the cloud again. Now everything is in order again. Thank you.

I install 2.2.0 today. Where can I find changelog for last version? Thx