So I am running a us new 3ds xl on 9.0 sysnand with 9.5 emunand and I have installed tri force heroes as a CIA and I want to play with my bro through download play since he doesn't have it but his new 3ds is up to date on system updates. When I first try to do download play the game was trying to download for over 5 min. Do both systems really need to be on the same firmware to work, or does it just take forever to download or is there some sort of workaround I can do?