DebugPoint published a tutorial about how to upgrade to Linux Mint 20.2 from 20.1.

How to Upgrade to Linux Mint 20.2 from 20.1

In this post, we walk you through the steps needed to Upgrade to Linux Mint 20.2 from 20.1. If you are using Linux Mint 20.1 Ulyssa, then you should already receive notification for upgrade. If not, follow the guide as outlined below, and you can get the Linux Mint 20.2 in no time. 

How to Upgrade to Linux Mint 20.2 from 20.1 - debugpoint.com