If you download a raw .psu file (PS2 Save Utility format), you cannot use it directly. Use myMC (Memory Card Manager) on Windows to inject the .psu into a blank .ps2 card.
To get save data working on AetherSX2 , you can either download a 100% completion file or transfer your own. Because AetherSX2 uses a virtual memory card format ( .ps2 ), the process often requires an intermediate step on a PC. 📂 Quick Save File Setup Save Data Resident Evil 4 Aether Sx2
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