This is the #1 issue players face. You transfer a save file, boot the game, and it says the data is corrupt. Here is how to fix it:

Since AetherSX2 is an Android emulator, the easiest way to manage its memory cards is often by using a PC as an intermediary. Prepare the Tool: Download the

Use the option in the AetherSX2 side menu to move files into the emulator's protected directory if your file manager cannot access them directly.