First, let’s clear up a major misconception. (released in 2021 by Playground Games) was developed for Xbox Series X|S, Xbox One, and PC. It was never released for the Sony PlayStation Portable (PSP).
Instead of searching for unreliable ISO files, use these official and advanced methods: How to Download Forza Horizon 5 on Mobile - StarDesk
Move the ISO file to your internal storage (e.g., /Documents/PSP/Games ) 1.2.2.
: Streams the game directly from your home gaming PC to your Android phone for free. Best Authentic Open-World Racing Games on Android