A: Yes. The PPSSPP emulator runs on both. Use the same ISO file. On Steam Deck, use Linux PPSSPP; on PS Vita (Adrenaline), ensure you have the PSP firmware updated.

Open ZArchiver and locate your downloaded .zip or .rar file.

Ristechy is a well-known source in the gaming community for providing highly compressed ISO files and "best settings" configurations for emulators. When downloading FIFA Street 4 from such sources, you are typically getting a modified version of a PSP title (often FIFA Street 2 or a modded FIFA 12/13) that has been textured and updated to look and feel like FIFA Street 4.