When a new version of Windows releases, an updated version of the Media Creation Tool and Update Assistant becomes available to upgrade computers to the latest version, making it impossible to use the same tools to downgrade if you prefer an earlier release. If you need to roll back, you can usually use the recovery option to uninstall an upgrade, but the option is only available for the first ten days, and sometimes it does not even work. However, if you have to install an older version of Windows 10, you can use “Rufus” to download the Windows 10 21H1 ISO file after the release of version 21H2. Rufus is a third-party tool designed to create a USB flash drive to install Windows. The difference with the Media Creation Tool is that the tool includes an option to download the ISO file and prepare a bootable media using an older version of Windows 10. In this guide, you will learn the steps to use Rufus to download the ISO file and create a USB to install Windows 10 21H1 after version 21H2 (November 2021 Update) releases.

Download Windows 10 21H1 ISO after 21H2 releases

To download the Windows 10 21H1 ISO file, use these steps: Once you complete the steps, you can use the ISO file to install the November 2021 Update using a clean or in-place upgrade installation.

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