Kernel problem on debian 12

[TheEpicTen]

After running the script succesfully, and restarting, I get an error message regarding the kernel not being installed. When I ran the script, it asked if I wanted to download the kernel automatically and I said Y. If I choose "Debian/GNU Linux with arm64" (i think) on boot, everything works fine, however if I choose "Debian/GNU Linux with chultrabook" (which is a new option that only appeared after running the script, it asks me to install the kernel. I am new to Linux, so any help would be appreciated, as I'm hoping to use this chromebook for work, and I really need audio for that.

(BTW, I'm using MrChromebox's firmware)

[leahanderson1]

can you tell me the exact error?

[MrApchy]

If Secure Boot is enabled，install chultrabook Kernel will prompt for a signature error

[leahanderson1]

in that case, you'll need to add chrultrabook kernel to moktool