They never stated backups of your
Q: Can I backup my games with SX OS and create my own game ROMs?
A: Currently there's no easy way to backup games with SX OS. We will add support for this in an update.
Q: If I boot in OFW mode and play my original purchased game online, am I safe?
A: Yes, you are safe to play original games online in OFW mode.
Q: Does SX OS plays the original games in CFW mode?
A: Yes, it does.
Yes but they never intended to use backups created by the users online, now they implemented a way of doing that correctly, you can buy an eshop game and play online, you can buy a cartridge and hell you can play online, but a backup was a no no, now is not the case, well if you put your own cert