Play PSP ad-hoc games on PSP Relay with a real PSP

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PSP · PSP Relay · Real PSP

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PSP Relay is a public ad-hoc relay that lets a real PSP play ad-hoc games with other PSPs, PS Vitas, and PPSSPP over the internet. Setup on hardware uses the [aemu plugin](https://github.com/Kethen/aemu/blob/main/installation.md). Official install steps cover the PSP-2000, PSP-3000, and PSP Go; they do not document the PSP-1000.

## What you need

- Custom firmware. [aemu](https://github.com/Kethen/aemu/blob/main/installation.md) supports 6.61 PRO-C (still somewhat supported) and may require 6.61 ARK-4 in later releases.
- A working Wi-Fi hotspot. Avoid special characters in the SSID. In the XMB go to **Settings > Network Settings**, set up an **Infrastructure Mode** connection, and use **Test Connection** (Triangle menu) to confirm it works.
- The latest aemu release from [GitHub](https://github.com/Kethen/aemu/releases).

## Prepare the PSP

1. In **Settings > Power Save Settings**, set **WLAN Power Save** to Off.
2. On a PSP-2000 or PSP-3000, go to **Settings > System Settings** and set **UMD Cache** to Off.
3. Open the recovery menu (Select on the XMB) and apply the aemu CFW settings for your firmware.

**PRO-C:** Advanced > Memory Stick Speedup = None; Advanced > Inferno & NP9660 Use ISO Cache = Disabled; Advanced > Force High Memory Layout = Disabled; CPU Speed > Game CPU/BUS = `333/166`.

**ARK-4:** Custom Firmware Settings > CPU Clock in Game = OverClock; Use Extra Memory = Auto; Memory Stick Speedup = Off; Inferno Cache = Off.

## Install aemu (PSP-2000 / PSP-3000)

1. Copy the `kd` and `seplugins` folders from `dist_660_release` to the root of the memory stick (`ms0:/`).
2. If it is not already there, add this line to `ms0:/seplugins/game.txt` on PRO-C:

`ms0:/seplugins/atpro.prx 1`

On ARK-4, add this line to `ms0:/seplugins/plugins.txt`:

`game, ms0:/seplugins/atpro.prx, on`
3. Open `ms0:/seplugins/hotspot.txt` and write the SSID of your hotspot.
4. Remove `ms0:/kd/pspnet_miniupnc.prx` if that file exists.

## PSP Go

Follow the same CFW and network steps, but copy `kd` and `seplugins` to both `ms0:/` and the internal storage `ef0:/`. Enable the plugin in both plugin lists (use `ef0:/seplugins/atpro.prx` on the internal list). Write your SSID in both `ms0:/seplugins/hotspot.txt` and `ef0:/seplugins/hotspot.txt`. Remove `pspnet_miniupnc.prx` from both `kd` folders if it exists.

## Choose a relay server

By default aemu uses `socom.cc`. To use another server, edit `ms0:/seplugins/server.txt` (and `ef0:/seplugins/server.txt` on a PSP Go). aemu documents these public relays:

- `socom.cc` — [Socom Adhoc Server](https://discord.com/invite/XtVYDr7) (France)
- `psp.mgn.pub` — [Madness Gaming Network](https://discord.com/invite/kaPScVrPes) (Alaska, USA)
- `eahub.eu` — [EA Nation Hub](https://discord.com/invite/fwrQHHxrQQ) (France)
- `psi-hate.com` — [PSP Online](https://discord.com/invite/wxeGVkM) (Minnesota, USA)

A longer list is on the [PPSSPP ad-hoc server list](https://www.ppsspp.org/docs/multiplayer/adhoc-servers/). Everyone you want to play with must use the same server.

## Port offset

If you play with PPSSPP, all players must use the same port offset. PPSSPP documentation recommends `10000`. Set that value in `ms0:/seplugins/port_offset.txt` (and `ef0:/seplugins/port_offset.txt` on a PSP Go).

## Play

1. Connect the PSP to the hotspot you wrote in `hotspot.txt`.
2. Start an ad-hoc multiplayer session in the game as usual.
3. If the game lags or drops often, pick a closer relay and use a clean 2.4 GHz channel, as described in the [aemu troubleshooting notes](https://github.com/Kethen/aemu/blob/main/installation.md).

Sources: [aemu installation](https://github.com/Kethen/aemu/blob/main/installation.md), [PPSSPP ad-hoc server list](https://www.ppsspp.org/docs/multiplayer/adhoc-servers/).

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