Let’s be clear: This is not a new update from Nintendo. No new Pokémon, no balance changes, no online revival. Instead, the Pokémon X December 15th decrypted release is a community achievement—a key that unlocks the game’s final official patch for study and modification.

For the average player, you can ignore it. For the hardcore modder or digital archaeologist? This is the cleanest, most complete look at Kalos’s final form we’ve ever had.

Once you have acquired your decrypted 3DS file, you will need the right software to run it.

It is important to note that save files are not cross-compatible. If you start a game on the USA version of Pokémon X, you cannot transfer that save file to the EUR version. You must stick to one region throughout your playthrough.

Let’s walk through the installation process for a real Nintendo 3DS with Luma3DS custom firmware. This assumes you have already acquired the decrypted CIA file (usually named something like Pokemon_X_v1.5_Decrypted_EUR.cia).

Step-by-step:

Note: The update installs to your SD card, not the cartridge. Do not delete the update data from System Settings unless you want to revert to 1.0.

Nintendo’s 3DS eShop is gone. Online services are on borrowed time. Having unencrypted, region-accurate update files ensures that even if Nintendo pulls the plug on update servers, Pokémon X can still be patched to its final, most stable version via homebrew or emulation.

Deep in the battle script files, miners found animations for moves that were never implemented in X/Y, including early versions of Flying Press targeting logic and a cut Water-type Z-move prototype (predating Sun/Moon).

If you speedrun Pokémon X (Any% Glitchless), the official leaderboards require version 1.5. Decrypted ROMs are allowed as long as they match the hash of the original update. The removal of the Lumiose City glitch creates a fair playing field.

It is vital to address the legal aspect of "downloading decrypted ROMs."

Downloading a ROM for a game you do not own is piracy.

While it is tempting to type "Pokémon X decrypted download" into Google, we strongly recommend the following preservation method if you already own a cartridge:

This method is 100% legal and ensures you have a clean, working copy that you have the rights to. However, for those who do not have the hardware to dump games, ROM sites remain a gray area used at your own risk.