XLink Kai tunnels PSP ad-hoc play over the internet. Team XLink's official PSP setup is for a real PSP. The modern method needs custom firmware so the PSP can load a plugin; stock consoles have to use their legacy connection method instead.
What you need
- A PSP running custom firmware such as Pro-C 6.60 or 6.61.
- A dedicated Wi-Fi adapter supported by XLink Handheld Assistant (XLHA). If your computer already uses Wi-Fi for internet, you need a second adapter; one adapter cannot be on Wi-Fi and the PSP at the same time. See the PSP and PS Vita Wi-Fi adapters list.
- A PC, Mac, or Raspberry Pi, plus an internet connection.
- A game with Ad Hoc / wireless play (Team XLink lists hundreds of supported PSP titles).
Install XLink Kai and XLHA
- Create an account at teamxlink.co.uk, verify your email, and agree to their policies.
- Install XLink Kai for your operating system, using the install guide linked from the PSP setup page.
- Download XLink Handheld Assistant (XLHA). The setup guide is included in the download and on GitHub. For PSP, follow the Plugin Mode section.
- On Windows, Team XLink notes you may need the Windows 7 version of the drivers for your Wi-Fi card.
Play
- Start XLink Kai and log in.
- Power on the PSP and load a game with ad-hoc support.
- In XLink Kai, open Game Arenas and go to that game's arena.
- When at least one other player is in the arena, connect your Wi-Fi adapter and start XLHA. Choose Plugin Device, select your Wi-Fi adapter, and leave the default connection settings if XLHA and XLink Kai are on the same computer. Then choose Start Engine.
- Open Metrics in XLink Kai. You should see XLHA and, once you search for an ad-hoc match in the game, your PSP. If XLHA appears but the PSP does not, go into the game's ad-hoc multiplayer menu and search for a match.
- Join the hosted game. Within a few seconds XLHA should show that it has connected to an ad-hoc network whose name starts with
PSP_. - Wait for the host to start.
If you have trouble finding players, Team XLink points you to their Discord and game-specific channels.
Source: PlayStation Portable XLink Kai Setup.