I agree there is an issue with the built in installer for xcom. Couldn’t get sx installer to work but mounted xci and used tinfoil to install. Worked no problem
i installed the xci via sxos. then i booted to REINX and started the game. once i got a save message, backed up the save and deleted the game. booted back to sxos and the xci that is stored on external usb works fine.
i ended up installing the 6gb version since i found it in several trusted sources once i started looking. it only uses 3.1gb of space on the memory card and says version 3.4.
auto
haven't tried without the update. i would assume you can play straight from the cartridge, but the physical copy...