A trade evolution patch modifies the internal game data. It changes the evolution triggers from "Trade" to level-up milestones or item requirements. This preserves the core gameplay loop while eliminating dead ends for solo players. The Best Ways to Fix Trade Evolutions in Pokémon FireRed
: On newer versions like the Nintendo Switch re-release, players use specific naming glitches to create a "Tradeback NPC" in Viridian City who triggers evolutions for you. pokemon fire red trade evolution patch better