Error trying to downgrade 4.12 to 3.10

Installation Home Assistant OS
1

Hey All,

I’m getting the following error when I try to downgrade through the SSH client:

20-08-12 03:38:45 ERROR (MainThread) [supervisor.hassos] HassOS update fails with: Installation error: Failed updating slot boot.0: Opening output device /dev/disk/by-partlabel/hassos-boot failed: Device or resource busy

I don’t understand what this means. My setup is HassOS through VirtualBox on a Windows 10 NUCi5 host.

Also, are OS upgrade required or are they optional. There’s so many pieces, Supervisor, OS, Application. Ever since version 4 my Bluetooth Tracker does not work.

Thanks,

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