You can find Pokémon Emerald save files with a completed Pokédex (all 386 Pokémon) on community-driven archival sites. These files are typically in .sav format (128KB) and are compatible with most GBA emulators and flash carts. Popular Sources for Save Files
A. Emulator quick install (Windows, mGBA) Pokemon Emerald Save File All Pokemon
Saving All Pokémon in Pokémon Emerald
.sav file to a backup folder.Pokemon Emerald (U).sav into the "Battery" or "Saves" folder where your emulator stores files.Limitations
GameFAQs: A long-running repository offering various save types, including 100% completions with Shiny Living Dexes, event Pokémon, and competitive teams. You can find Pokémon Emerald save files with
Event Legitimacy: Many high-tier save files feature "legit" event Pokémon like the Wishmaker Jirachi, Old Sea Map Mew, and Aurora Ticket Deoxys. Competitive & Utility Pokémon Delete old saves