zelifcam , 6 hours ago (edited 6 hours ago)

Wow. The terms “nuked” and “bricked” seem to have lost the meaning I grew up with. What you provided is just a simple error.

It says dependency problem. Have you installed the dependency? It says:

Package linux-image-6.9.7+bpo-amd64-unsigned is not installed. … linux-headers-6.9.7+bpo-amd64 depends on linux-image-6.9.7+bpo-amd64 (= 6.9.7-1bpo12+1) | linux-image-6.9.7+bpo-amd64 -unsigned (= 6.9.7-1bpo12+1);

Maybe you’re doing too much at once. What happens when you just install the one kernel?

<span style="color:#323232;">sudo apt install linux-image-6.9.7+bpo-amd64
</span>

Or maybe try to uninstall the new kernel and its headers. Make sure you have dkms installed and run the apt fix again.