There is no file named "AetherSX3.apk" from the official developer. If you see websites offering "AetherSX3 Emulator Android download," they are either:
: The official developer of AetherSX2 (PS2) discontinued the project in early 2023. Most "SX3" versions found today are unverified third-party mods or potentially malicious copies. aethersx3 emulator android