Hi I have the same problem as the other, I have SXOS v2.9.4 on firmware 9.2.0
Latest version form ghub crashed when booted from Ram, and giving me eternal blackscreen when launched from album. Somehow I was able to use it once to make a backup from ACNH when the bunny event started, but after that I tried to use it again and it never booted. Only crashed.
I used the latest .nro you just uploaded 04.04.2020t, when loaded from Ram, it crashes to main menu. When loaded from album it gave me error code:2168-0002 and made me restart.
Hope this helps as I am eager to use JKSV, thanks for your effort.