While the Nintendo 3DS eShop has officially discontinued new purchases, players can still download existing software updates. Pokemon X Update | Fandom - Pokémon Wiki
A: If you are using an emulator like Citra, yes. If you are on a real 3DS using a flashcart (like Gateway), updates usually need to be converted or applied differently. CIA is the preferred method for modern CFW users. Pokemon X- Update 1.5 3DS -World- CIA -Region F...
The "Region Free" or "World" designation is vital for modern 3DS preservation and emulation. While the Nintendo 3DS eShop has officially discontinued