-add ukuu repo and install:

# sudo add-apt-repository ppa:teejee2008/ppa
# sudo apt update
# sudo apt-get install ukuu

-list available kernels version:

# ukuu --list

-install latest available kernel:

# sudo ukuu --install-latest

-or set need version:

# sudo ukuu install --v4.16

-update grub:

# grub-mkconfig -o /boot/grub/grub.cfg
if efi loader:
# grub-mkconfig -o /boot/efi/EFI/ubuntu/grub.cfg