It sounds like you’re referring to PSPISO Club (a forum site that hosted PSP, PS2, and other game downloads) and trying to get Grand Theft Auto V working there.
However, there’s a critical clarification first:
Below is a guide based on what people actually meant back then, plus a warning about the risks. pspiso club gta 5 work
PSPISO Club is a notorious, unofficial website in the ROM and emulation community. Historically, it provided downloadable .ISO files—disc image files—for PlayStation Portable games. Over time, the site (and its countless clones or re-uploads) began hosting content for other systems, including:
The site is not affiliated with Rockstar Games, Sony, or any legitimate publisher. It operates in a legal gray area (typically outright piracy), and it is notorious for aggressive advertising, malware, and fake download links. It sounds like you’re referring to PSPISO Club
To understand the obsession, you have to understand the context. The PSP was a beast. It was 2005 technology running games that looked suspiciously close to the PlayStation 2. Sites like PSPISO (and its contemporaries like ISOHunt or dedicated forum threads on sites like Onehitgamer) weren’t just download hubs; they were digital town squares.
Users didn’t just trade files; they traded hope. When Grand Theft Auto: Liberty City Stories dropped, it felt like a miracle. Vice City Stories followed, cementing the PSP as the only place to get open-world crime fixes on the go. GTA V was never released for the PSP
But as the console generation shifted, the PSP began to show its age. The PlayStation 3 and Xbox 360 ushered in the HD era. In 2013, Rockstar Games unleashed GTA V on the world. It was a masterpiece of scale, detail, and narrative. It was also technologically impossible for the PSP to run.
But the community at PSPISO didn't care about "impossible."
Legit GTA games released for PSP:
You can find their ISOs legally if you own the UMDs (backup copies for personal use).