Why Ngen didn't work when the code use Assembly.LoadFrom

I'm using ngen to install native image of an exe. In the code i use Assembly.LoadFrom("MyLib.dll"), so i need also to install their dependencies. I checked on Doc and i found

ngen install c:\myfiles\MyLib.dll /ExeConfig:c:\myapps\MyApp.exe

But it's not working the MyLib.dll is Compiled using Jit. How we can resolve this ?

I don't want to use Assembly.load but i need assembly.loadFrom