Region mismatch. Go to AetherSX2 settings > General > BIOS. Ensure your BIOS is the same region as your save file. If you have a USA BIOS (SCPH-39001) and a PAL save, it won't read. Use a tool like PS2 Save Builder to convert region.
Finding the exact location of your save data is the first step. While file paths can vary slightly depending on where you downloaded the emulator, the standard locations for most builds are outlined below. If you are using a patched version like NetherSX2, the paths generally remain the same. save data resident evil 4 aethersx2
For simple transfers between devices or basic backups, use the emulator's internal system: Exporting Data : Open the AetherSX2 menu (three lines), select Transfer Data , and choose Region mismatch
If you want to skip the initial grind to unlock the Chicago Typewriter, Infinite Launcher, or Professional Mode, you can download a completed save file online (typically from sites like GameFAQs) and import it into Aethersx2. Step 1: Download the Save File If you have a USA BIOS (SCPH-39001) and
Go to the Aethersx2 main menu, open App Settings , navigate to the Memory Cards tab, and ensure that Slot 1 is toggled "On" and formatted as an 8MB card. If you are using a 16MB or 32MB card, some games like RE4 fail to recognize them. Stick to standard 8MB sizes for maximum compatibility. Save States Not Loading After an Update