In the context of the 3DS, "decrypted" refers to files that have had their standard Nintendo AES encryption removed. Standard .cia or .3ds update files downloaded from the eShop are encrypted to run only on specific hardware.

Ultra Moon, along with its counterpart Ultra Sun, acted as the swan song for the traditional handheld Pokémon formula. Update 1.2 ensured that the transition to the Battle Tree and high-level competitive breeding was seamless. For many, this update represents the final "polished" state of Generation VII.

While Update 1.2 might seem like a minor footnote in Pokémon history, its "decrypted" existence is a cornerstone of the 3DS legacy. It represents the transition of Pokémon Ultra Moon from a commercial product tethered to a specific storefront into a preserved piece of digital media that can be enjoyed, bug-free, by future generations of trainers.

A technical error that occasionally caused the game to crash when interacting with the ID Lottery in Hau'oli City.

Glitches involving moves like Ion Deluge and Curse that could cause the game to freeze during online battles.