GNU/Linux Ubuntu 20.04 Installing Kernel 5.13 Guide
Hi! The linked Tutorial Shows You Step-by-step How to Update to Linux Kernel 5.13 in Ubuntu 20.04 Focal LTS GNU/Linux Desktop.
And Kernel 5.13 for Ubuntu 20.04 is easily installed by the Mainline Kernel Updater GUI Tool.
Moreover, the Mainline Features:
Fetches Kernel list from kernel.ubuntu.com
Optionally watches and displays notifications when a new kernel update is available
Downloads and installs packages automatically
Display available and installed kernels conveniently
Install/remove kernels from gui
For each kernel, the related packages (headers & modules) are installed or removed at the same time
So first Install Mainline Kernel Updater GUI and then between the available ones you’ll find the 5.13 release.