Since AetherSX2 uses the same format as the PCSX2 Emulator , you often need a PC tool called mymc to "inject" these specific saves into your MCD1.ps2 memory card file.
Saving/Loading | Resident Evil 4 Official Web Manual - CAPCOM resident evil 4 aethersx2 save data
If you cannot see these folders due to Android permissions, use the Transfer Data option in the AetherSX2 menu (top left) to export them. How to Import 100% Save Files Since AetherSX2 uses the same format as the
These are instant "snapshots" of your game. They are found at Android/data/xyz.aethersx2.android/files/sstates/ . They are found at Android/data/xyz
If you want to start with all weapons like the Infinite Rocket Launcher or the Chicago Typewriter, you can import save files from sites like GameFAQs .
These act as the physical memory cards from the original console. They are located at Android/data/xyz.aethersx2.android/files/memcards/ .