[✗] Unsupported OS detected: Raspbian 12
If you are seeing this message and you do have a supported OS, please contact support.
https://docs.pi-hole.net/main/prerequisites/#supported-operating-systems
If you wish to attempt to continue anyway, you can try one of the following commands to skip this check:
e.g: If you are seeing this message on a fresh install, you can run:
curl -sSL https://install.pi-hole.net | sudo PIHOLE_SKIP_OS_CHECK=true bash
If you are seeing this message after having run pihole -up:
sudo PIHOLE_SKIP_OS_CHECK=true pihole -r
(In this case, your previous run of pihole -up will have already updated the local repository)
It is possible that the installation will still fail at this stage due to an unsupported configuration.
If that is the case, you can feel free to ask the community on Discourse with the Community Help category:
https://discourse.pi-hole.net/c/bugs-problems-issues/community-help/
Error: Unable to complete update, please contact support
As of now, Raspbian 12 (just released today or yesterday) is not supported. You can bypass the unsupported OS problem as noted.
I think (haven't confirmed, since I am running dev 6.0 on a supported OS), that if you pipe the last two commands to the unsupported bypass, it will work.
Again, I haven't tested this. Run it and see if it works for you.