Ukuu - Ubuntu Kernel Upgrade Utility (must have)
Ukuu utility is a graphical program for notification of release of the new Linux kernel with automatic installer in graphical form, without the need to download separate .deb packages of the kernel.
purge-old-kernels - safe way to remove old kernels
Every month are new kernel updates, bug fixes and patches security system. If you regularly update your system, then your system gradually accumulates more the number of unused old kernels.
Install Linux Kernel 4.6 (Stable) on Linux Mint
Linus Torvalds introduced the Linux kernel release 4.6. List of changes in the kernel 4.6 can be found HERE. You can download the relevant deb packages from HERE and install
Install Linux Kernel 4.4 (LTS) on Linux Mint
The Linux Kernel 4.4 LTS (Long Term Support) is a kernel with long term support until February 2018. You can download the relevant deb packages from HERE and install them. Or