sudo apt update
sudo apt install antix-archive-keyring
# Download the antiX archive keyring package
wget http://antix.daveserver.info/testing/pool/main/a/antix-archive-keyring/antix-archive-keyring_20017.3.14_all.deb

# Install it
sudo dpkg -i antix-archive-keyring_20017.3.14_all.deb

# If prompted, choose Y to install the new keyring version
sudo nano /etc/apt/sources.list.d/antix.list
deb http://repo.antixlinux.com/bookworm bookworm main


# Search for available 4.19 kernels
apt-cache search linux-image-4.19

# Install the antiX 4.19 kernel (example package name — verify with search above)
sudo apt install linux-image-4.19.0-324-1.0antix.1-amd64 linux-headers-4.19.0-324-1.0antix.1-amd64

sudo update-grub
sudo reboot