Shelly Plus 1 Relay with BT Proxy

Couldn’t find any recent posts nor any that seemed to have a definitive answer. Has anyone had luck flashing ESPHome with BT Proxy enabled on a Shelly Plus 1 Relay? What about with active set to true as well?

I’ve got a couple places where I have regular Shelly 1s already installed, but could really used a BT Proxy as well. It would be awfully elegant to just swap them with Pluses rather than adding another device just for BT Proxy.