grub will not boot new kernel

For some time back I installed Linux mint 17 on my desktop machine, which is a dell studio 540. During the installation process, I did not have any internet connection, because my wireless card needed a proprietary driver to work (fixed using fwcutter). So recently I wanted to install a newer distro kernel due to some bug fixes, using the software manager. It installs fine, but when rebooting the grub won't run the new kernel. So I thought I should check out the grub versions: Grub version output from terminal: grub --version grub (GNU GRUB 0.97) Grub version from the grub menu when booting into grub: GNU GRUB version 2.02-beta2-9 Why are they not the same ? Could it be a missing update, due to the lost internet connection during installing the Linux mint ? btw: I have no problem installing new kernels on my laptop, which did not need any proprietary driver for the wireless.