Windows 10: Clarification on Windows 21h1 to 21h2

https://docs.microsoft.com/en-us/lifecycle/products/windows-10-home-and-proWe are currently using windows 10 pro 21h1. Based on this doc, Will Microsoft stop releasing security patches for Windows 10 pro 21h1? What does it mean by 21h1 release end date Dec 12, 2022?Do we have to upgrade to 21h2 to continue receiving security patches?

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How to downgrade Windows 10 21H2 to 21H1?

This is the Windows 10 version i have:

Edition Windows 10 Pro

Version 21H2

Installed on ‎5/‎22/‎2022

OS build 19044.1741

Experience Windows Feature Experience Pack 120.2212.4170.0

It turned out version 21H2 is not supported for my CPU, AMD A4-9120e. I want to downgrade to the version my laptop came with. I believe the version was 21H1, but I'm not sure. Anyway, i want to downgrade to 21H1, because, i think, it uses less CPU, and is less likely to damage my hardware. After all, 21H1 is tested and proven compatible for AMD A4-9120e, while 21H2 isn't tested for my CPU, and there is no way to know if there is a lack of compatibility that may damage my hardware.

So, can someone tell me how to downgrade to the previous version?

 

Nearly 4 Hours To Update From 21H1 To 21H2

Thanks for the comments. As suggested I will use Windows Update on my other machines for moving from 21H1 to 21H2.

 

windows 21h2 update

Since you updated from 20H2 to 21H2 you have got new features introduced in 21H1 and 21H2 (not so much).

See these blogs for 21H1 and 21H2:

Introducing the next feature update to Windows 10, version 21H1 | Windows Experience Blog

Introducing the next feature update to Windows 10: 21H2 | Windows Experience Blog