Bluetooth Problem

[heimchemiker]

I am having problems connecting a Bluetooth speaker to a RaspberryPi Zero W running phoniebox version 2/master. I tried installing the version 3/future, and with that version running I can connect the speaker and play audio through it. Just not using the version 2.
Because of the GPIO bug, I can't update to the newest RasPi OS (bookworm) (I need the GPIOs for buttons and RFID reader).
I also can't use the Bluetooth workaround mentioned here, because this is only available for either "raspian stretch" or the newest RasPi OS "bookworm" ("Note: The package bluealsa isn't available anymore since bullseye. For bookworm you can use bluez-alsa-utils instead.").
I tried installing version 3 and then version 2, but while this does install and run fine, it won't reboot.
What things would I need to install additional after the install of Version 2 to be able to connect a bluetooth speaker to a raspi zero W running bullseye and Phoniebox Version 2/master.

[AlvinSchiller]

Hi, installing both version (2 and 3) can't work as they use a completely different approach for the playback. So installing both is going to break pretty much everything.

We are close to resolve the GPIO problem on Bookworm, so this can be used soon.

I researched again and maybe there is another workaround for bullseye. I just tried the device connect and it worked, but i don't know if there are any drawbacks / problems coming on usage.

• add a new apt source list with the bookworm repo

echo "deb http://raspbian.raspberrypi.org/raspbian bookworm main" | sudo tee /etc/apt/sources.list.d/bookworm-bluetooth.list

• update and install bluez-alsa-utils from the bookworm repo (accept all prompts)

sudo apt update
sudo apt install bluez-alsa-utils

• remove the list again, to not interfere on future installations

sudo rm /etc/apt/sources.list.d/bookworm-bluetooth.list
sudo apt update

• reboot and follow the description from the wiki page

[heimchemiker]

Thank you so much for this help. So far it has been working flawlessly.