Bluetooth - Enable experimental features

Hello,
I have recently bought an Home Assistant Green, and I’m currently trying to configure a Bluetooth USB stick(to use the BTHome integration).

When I plug it in I get this error(in the Bluetooth integration):
Failed setup, will retry: hci0([address]): hci0([address]): Failed to start Bluetooth: passive scanning on Linux requires BlueZ >= 5.56 with --experimental enabled and Linux kernel >=5.10; Try power cycling the Bluetooth hardware.

Running “systemctl status bluetooth” I get this (sorry for photo but I haven’t been yet able to setup SSH)

Looks like experimental features is not enabled (missing --experimental tag).
I tryied to edit the “/lib/systemd/system/bluetooth.service” file to set “ExecStart=/usr/libexec/bluetooth/bluetoothd --experimental” but I get this error: “‘bluetooth.service’ is read only” (using vi as text editor).

uname -r returns “6.12.23-haos” (so >= 5.10) and bluetoothctl -v returns “5.79” (so >= 5.56).

Did anyone else have this problem?

Any help is appriciated,

Gianluca

Is your adapter a ‘Known working high-performance adapters’?

I wouldn’t waste my time if it’s not.

No it’s not, it’s an old Trust usb stick I have at home, I was hoping to experiment a bit with this one before buying something better.