Since the official Nintendo eShop is closed, you must source the update file manually. You are looking for the file typically named: Pokémon X Update v1.5 CIA
refers to the final official software patch released for the Nintendo 3DS title. While the eShop has officially closed for new purchases, Nintendo Support
: Consider purchasing games directly from the Nintendo eShop in your region. This ensures you get official updates and support.
: The term "region-free" or playing games from any region without modifications refers to the ability to play games from different geographical regions on a console. The Nintendo 3DS, by default, restricts games to their designated region to comply with various legal and distribution agreements.

