japan is on a higher FW, because the initial 9.0 update for them missed the themes, so they had to give them another update to add them
beside theme shop it also added Nintendo eShop, Internet Browser and system transfer for the japanese N3DS
their 9.1 is our 9.0
beside theme shop it also added Nintendo eShop, Internet Browser and system transfer for the japanese N3DS
their 9.1 is our 9.0