If you want to install an update which is entirely undocumented, go ahead I installed it in my test vm, it didn't explode And please do not quote entire posts just to ping someone, select a line (or two) you want to quote or use the @Enthousiast tag.
Both 26120.5790 and 26220.5790 generated by uupdump download cannot be properly installed from scratch.
interestingly the 26220 ekb doesn't show in Settings, uninstall updates and no this isn't a UUPDump thing, since my Surface has that behavior too, and that install is done via WU
Why are UUPDump generated ISOs so much larger than the official ones? Latest 24H2 Business ISO is 6.5GB... 26200.5074 ISO made with UUPDump is 9.3GB in size. Is it just because it includes more SKUs? (IoT Enterprise and ServerRdsh).
Converted 26220.5790 with uup-converter-wimlib-117. And setup started instantly. thank you abbodi1406 I was able to upgrade from 26200.5074 to 26220.5790 now.