All times I integrated languages in my AIO installation isos, there is no option to install windows 7 in that language, and the language files can only be used by Ultimate version, so yeah, not cool for people not owning such expensive licenses (and the usual suspects pirating stuff). I found ways to add them to the installation options by tweaking boot.wim (and another file) as from here and Can this be added to WinToolkit? Or, is this already in WinToolkit and I'm too dumb to use it right? Please tell me how to pull it off then.