yes, if you have the folder, .so, and corresponding videomapping on your microSD then the module is installed to microSD and should be detected at startup.
in the JeVois Inventor console, can you try this:
1) turn on log messages to USB (click the USB button for log messages)
2) turn off video streaming (this is in the System tab)
3) back to the console, run
setmapping2 YUYV 320 240 20.0 Tutorial HelloJeVois
and see what kind of error you get back. Note that this should eventually give you an error since we are here trying to trigger the module in no-USB-out mode but that simple module does not support it. But what we want to see is whether we get an error earlier, like cannot load .so file, module not found, typo somewhere, etc