Pihole update (pihole -up) from 5.18.3 to version 6 failed: "please contact support"

[nero355]

@Bucking_Horn

You could also try to chance in-place upgrades from 10 (buster) to 11 (bullseye) to 12 (bookworm), but procedures are quite complicated and prone to brick your system.

Please DO NOT DO THIS because the Debian 10 /boot is too small for newer versions !!!

You can upgrade from Debian 11 to Debian 12 but PLEASE DO NOT UPGRADE from 10 to 11 !!!

I know this because I have been messing around with this stuff like a month ago or so