I updated Win 11 21H2 to 22H2 on my unsupported PC flawlessly last night using the following procedures I learnt from other forum on web without using Rufus
1. download Win11 22H2 IOS from MS
2. extract the ISO contents using 7-Zip (unzip the ios) or other unzip program
3. in the "sources" folder there is a file called appraiserres.dll. Leave it there.
4. open your PC notepad and save the empty file and name it as appraiserres.dll. Copy this file to the sources folder and replace the original appraiserres.dll with this empty file. The size of this file in source folder is now 0KB.
5. click setup and the Windows will install itself right away. I did not disconnect the LAN cable connected to Internet during upgrading. Ensure PC has sufficient storage space for upgrading.
6. It took my PC about 60 minutes from clicking setup and back to Windows desktop
7. After that you can check Windows version running winver (22621.5xx)
8. check windows update to see if there are more updates available. The final version is 22621.608.