In server default kernel is 2.6.32-042stab141.3 I want to upgrade to 3 or higher I tried these steps
wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.11.2/linux-headers-4.11.2-041102_4.11.2-041102.201705201036_all.deb wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.11.2/linux-headers-4.11.2-041102-generic_4.11.2-041102.201705201036_amd64.deb wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.11.2/linux-image-4.11.2-041102-generic_4.11.2-041102.201705201036_amd64.deb
dpkg -i *.deb
sudo update-grub
reboot
uname -a output: Linux trenim 2.6.32-042stab141.3
after these steps, the Linux kernel has not changed.