Pokemon Ultra Sun | Update 1.2

Assuming you mean Pokémon Ultra Sun patch/update 1.2 (game update for Nintendo 3DS), key features and changes typically included in a minor version update like 1.2 are:

Released in late April 2018, Version 1.2 wasn't just a routine bug fixer. It was a tactical update that altered online functionality, tied directly into competitive battling events, and quietly changed how players interacted with the Nintendo 3DS servers. This article dives deep into every aspect of the 1.2 update, why it mattered then, and what it means for players revisiting the game today. pokemon ultra sun update 1.2

• Legitimate method (pre-existing owners): If your 3DS is linked to a Nintendo Network ID that previously downloaded the patch, you can go to "Menu" → "Settings" → "Data Management" → "Updates" and redownload it.
• New players (cartridge only): The update is not on the cartridge. If you buy a used copy of Ultra Sun today, your system will prompt you for the update when you try to go online. However, the eShop’s download servers for patches remain active (as of 2025) even though the store is closed. Connect your 3DS to Wi-Fi, launch the game, and select "Update" when prompted.
• Physical re-releases: Some "Nintendo Selects" versions of Ultra Sun manufactured after May 2018 have Version 1.2 pre-installed on the cart (look for "Rev 02" on the cartridge label).

Verdict: Unless you are a dedicated speedrunner or RNG manipulator, install Update 1.2. The stability and online compatibility far outweigh the loss of a few glitches. After all, the true spirit of Alola is about fair battles and new discoveries—not walking through walls. Assuming you mean Pokémon Ultra Sun patch/update 1