Pokemon Hyper Emerald 5.5 Lost Artifacts -

NPCs located in major Pokémon Centers allow you to modify your Pokémon's Nature to optimize their stats.

Trigger mid-battle power spikes using the correct mega stones or orbs. Pokemon Hyper Emerald 5.5 Lost Artifacts

If you are planning to migrate save files between versions 5.5 and newer patches (like 5.6 or 5.7), you must manually rename the corresponding files. NPCs located in major Pokémon Centers allow you

The base story in Hoenn is enhanced, but the Lost Artifacts version adds new plots involving the Rainbow Rocket (an organization that appears in Ultra Sun and Moon), references to the Ultra Green IV prophecy, and even a unique "Skitty Quest" involving an unstable, genetically modified Eevee. The base story in Hoenn is enhanced, but

Finding these items requires you to ignore the main storyline. You can technically start hunting after obtaining Surf in the main story, but you need the National Dex (post-Elite Four) to access the final artifact.