Downgrading Google Chromecast with Google TV to Android 9

[tfmeier]

My Google Chromecast with Google TV is running Android Q (10) and I want to integrate it into my home automation system which is possible (https://www.home-assistant.io/integrations/androidtv/)

However the stick needs to run Android 9 as Android 10 has introduced a SELinux policy that stops certain commands from being executed.

How can I downgrade my stick to Android 9?

[David_K · Accepted solution]

The short answer is you can't, there is no way to downgrade unfortunately.

[tfmeier]

Thanks @David_K Not what I wanted to hear as this renders this device useless in my household. While I understand the formal answer there should be a backdoor way as I'm sure Google would hold this image on android.com. What do you think?

[David_K]

Yeah I agree it's not great for your case, but if I add a few words to my previous reply it would be there is no user accessible way to downgrade I'm afraid. Google isn't going to provide that detail if it's even possible.

[Jeran]

Thank you for helping out on this thread, David!

Hey there tfmeier,

I'm just checking up on this thread, do you have any more questions or need any additional help? 

Best regards,
Jeran

[tfmeier]

No thanks Jean, unfortunately I'm at the end of the options here. We can close this

[Jeran]

Hiya tfmeier,

No problem at all. I'll go ahead and lock this thread. If you have any more questions in the future, feel free to create a new thread.

Have a good weekend!

Best regards,
Jeran