Downgrading the Rapberry Pi OS kernel (bookworm)
sudo apt-get install linux-image-6.6.74+rpt-rpi-v8
sudo apt-get install linux-image-6.6.74+rpt-rpi-2712
sudo cp /boot/vmlinuz-6.6.74+rpt-rpi-v8 /boot/firmware/kernel8.img
sudo cp /boot/vmlinuz-6.6.74+rpt-rpi-2712 /boot/firmware/kernel_2712.img
sudo cp /boot/initrd.img-6.6.74+rpt-rpi-v8 /boot/firmware/initramfs8
sudo cp /boot/initrd.img-6.6.74+rpt-rpi-2712 /boot/firmware/initramfs_2712