Search for "PCSX2 Resident Evil 4 100% Save". Since PCSX2 and AetherSX2 share the same memory card structure (raw .ps2 files), PC saves work on Android. Look for files with:
If you are looking to save your progress, transfer data between devices, or fix a corrupted save, this deep write-up covers everything you need to know about managing save data on AetherSX2. save data resident evil 4 aether sx2 full
AetherSX2 allows you to save the exact state of the game at any moment. Search for "PCSX2 Resident Evil 4 100% Save"