Inside, RE4 saves will appear as a folder named after the game's ID (e.g., BASLUS-21134 for the US version of RE4).
Managing your Resident Evil 4 save data on AetherSX2 requires a basic understanding of how the emulator handles "Virtual Memory Cards." Whether you are looking to back up your progress, move a save to a new device, or use a 100% completion file from the internet, the process is straightforward once you know where the files live. 💾 Understanding the Save Format
This format replicates a physical 8MB or 16MB PS2 memory card. AethersX2 creates a single file (usually named Mcd001.ps2 and Mcd002.ps2 ) that acts as a container for all your game saves. Inside this container, Resident Evil 4 progress is saved via the in-game typewriters. 2. Save States ( .mcd ) resident evil 4 aethersx2 save data
Keep the target backup directory separate from temporary app files to prevent accidental deletion.
One of the coolest features of AetherSX2 is cross-compatibility with the PC emulator PCSX2. You can start a game on your PC and finish it on your phone. Inside, RE4 saves will appear as a folder
Paste it directly into the memcards directory of the emulator's data folder. ⚠️ Common Issues & Fixes
Keep a dedicated Mcd002.ps2 for testing new save files, leaving your Mcd001.ps2 with your original progression. AethersX2 creates a single file (usually named Mcd001
: Convert unsupported formats (such as .max ) using tools like mymc or PS2 Save Builder . Also, verify that your device has sufficient free storage space.
Force-closing AetherSX2 while the typewriters or loading icons are flashing will corrupt the Mcd001.ps2 file, ruining all saves on that card.