Windows 10 20H2 is released, otherwise known as the October 2020 Update, Microsoft has made new ISO disk images for the operating system available. In this article we provide a trick that causes Microsoft’s site to offer a Windows 10 ISO instead of the Media Creation Tool. The trick works in Chrome or the new Microsoft Edge browser, not only Chrome or Edge. You can then create a bootable USB drive from the ISO and use it to install the Windows 10 operating system. For a clean install of Windows 10, you must have a product key available.
Source: https://www.bleepingcomputer.com/news/microsoft/how-to-download-the-windows-10-20h2-iso-from-microsoft/