Okay, I have installed A9LH on three 3DS's so far, (two Old 3DS's and one New 3DS XL) without any problems whatsoever. I'm now trying to install it on my friend's Japanese Old 3DS LL, but it WILL NOT DOWNGRADE!!! I keep trying to open PlaiSysUpdater but it keeps hanging on a yellow screen. It goes red, blue, green, real quickly and then just hangs on yellow. It's weird because I got it to work the FIRST time on every other 3DS I've used. It's ALSO weird because when I tried Browserhax on this Japanese 3DS, Browserhax wouldn't work either, even after about 120 attempts. (Yeah, really.) I have tried PlaiSysUpdater about 80 times now to no avail. I should point out that I do have the homebrew launcher on it now, because I ended up using OoTHax, and then installed ThemeMenuHax, (the 3DS is currently on 9.8.0-12J) so I've tried both of those. About 20 times via OoTHax, and about 60 times via ThemeMenuHax. Any help please?