Wasn't there a way to convert the games to work with lower firmwares with tinfoil? Or make a patched XCI installer?
Well you use to be able to make games to run on lower firmware, but newer games wouldn't run on lower firmware with bypass method. Been a thing or so with since firmware 8.0.0, games firmware are based on SDK it is used during development, with team xecuter being dead, no point of staying on SX OS, time to move on.