From Win11 IoT 24H2 to Win10 IoT 21H2 + KB5099539: Mais quelle horreur !

Downgrading from Win11 to Win10 is not something people do, unless they do that between IoT LTSC editions of Windows, and they use UpDownTool_LTSC_v3.iso. My history with the abominable Win11 [ ]