HI, saw your posting on the downgrade post
I also have a japanese n3ds, how did you manage to proceed downgrade without that 000400102002CA11.cia?
i had two lucky times starting to install, but it stopped when it was looking for that cia
I didn't know they made an MSU cart for the Genesis.... I knew about the SNES one and the library for that is rather large but the Genesis one has very few games