yeah some japanese n3DS came with 8.1.0-0J, (no browser pre-installed) the next firmware out after 8.1 was 9.0
http://en-americas-support.nintendo.com/app/answers/detail/a_id/231/~/system-menu-update-history
idk if maybe you could just install the browser from 9.0 on 8.1 though, but it seems the 8.1 menu was just so they could ship them on time, by launch 9.0 was out
http://en-americas-support.nintendo.com/app/answers/detail/a_id/231/~/system-menu-update-history
idk if maybe you could just install the browser from 9.0 on 8.1 though, but it seems the 8.1 menu was just so they could ship them on time, by launch 9.0 was out