Pokemon Ultra Moon Update 1.2 Now

Beyond the high-profile move fixes, the update addressed other minor mechanical issues:

The most notorious exploit resolved in 1.2 was the “Poke Pelago egg duplication glitch.” Previously, players could manipulate the Isle Avue hot spring to clone Pokémon eggs, allowing unlimited legendary or shiny Pokémon. The patch permanently corrected the memory handling error, making duplication impossible. pokemon ultra moon update 1.2

Pokémon Ultra Moon , released for the Nintendo 3DS in November 2017, received its final significant patch, Version 1.2, in April 2018. This paper examines the update’s technical and gameplay modifications, including bug fixes, online functionality changes, and the removal of unintended game mechanics. It argues that Update 1.2 primarily served to enforce competitive balance and patch exploit-based glitches rather than add new content, reflecting Nintendo and The Pokémon Company’s post-launch strategy for the 3DS era. Beyond the high-profile move fixes, the update addressed

: It resolved a bug where the move Ion Deluge—which turns Normal-type moves into Electric-type moves—failed to function correctly. This paper examines the update’s technical and gameplay

The official patch notes for v1.2, released by The Pokémon Company, were notably sparse, listing only adjustments to "gameplay experience." However, technical analysis by the community and observance of functional changes revealed specific alterations:

Version 1.2 silently patched a GTS text-injection vulnerability that allowed malicious users to crash others’ games by sending custom nickname strings. This was a critical security fix.