1:modify /boot/vmlinuz-5.15.0-1052-realtime(Kernels that need to be replaced)=vmlinuz
2:modify /boot/initrd.img-5.15.0-1052-realtime(Kernels that need to be replaced)=initrd.img
then Take the modified version vmlinuz and initrd.img copy to /boot/firmware/ (Make sure to back up the original files properly)
reboot ok
check: uname -a
by the way command Self research
sudo cp vmlinuz vmlinuz.old
sudo rm vmlinuz
sudo cp vmlinuz firmware/