I have a US O3DS with luma+a9lh and a Japanese N3DS on firmware 9.4. Since I don't feel like importing and then waiting for an exploit game I looked into DSIware downgrades on later firmwares but it seems like it needs a system transfer for it to happen. I know that normally system transfers are impossible to do between regions but is there some way of circumventing this? Like for example changing the region on the O3DS(I know this can cause errors) and transferring a JPN DSIware game that way? If it's impossible then that's fine but I'm curious on this.