You don't need to revert the Kernel Update. Like @zabadabadoo wrote and explained, you can go to the GRUB Menu and chose there the older Kernel.
And when you want keep the Kernel, You could use this Guide:
You don't need to revert the Kernel Update. Like @zabadabadoo wrote and explained, you can go to the GRUB Menu and chose there the older Kernel.
And when you want keep the Kernel, You could use this Guide: