Sharing Tony Hawk's Underground 2 Remix

First things first: make sure that you and your friend(s) have the WLAN switch on the bottom-left corner of your PSPs switched on. Assuming that you are playing host to the game, start up Tony Hawk's Underground 2 Remix. Once you click through all the beginning bits and load any saved profiles you may want to use, select WiFi Play from the game menu wheel.

Next, select Host Game as you would for any normal WiFi game, and set your server settings per your liking. Then, hit the X key to begin hosting. You will have to wait while the board you selected loads in server mode.

Once it has finished loading, your character will enter Free Skate Mode. Eject your disk, choose No, and hit the X button when the PSP asks whether you want to quit the game. You will return to Free Skate Mode. Make sure you leave the drive door open for now.

Continue free skating as your friend puts the UMD in her PSP and clicks through all the beginning bits. Your friend will select WiFi Play from the game menu wheel, choose Join Game, and select your game from the menu. Once your friend's PSP screen reads "Status: Joining game…," your PSP's screen will have an overlay reading that your friend is joining the game (see Figure 4-2) and, in all likelihood, your free skate will freeze. When this happens, have your friend eject the UMD disk and pass it back to you.

Put the UMD back in your PSP and wait until the screen begins moving again, still with the notification of your friend joining. Now, eject the UMD again and pass it quickly back to your friend. After she reinserts the UMD disk into her machine, the loading screen should appear on the second PSP, while you continue to free skate
If you didn't do all of these steps quickly enough, the connection will time out and you will receive a notification that your friend failed to connect. Your friend's board will still load, however, and inform her that the connection was lost. You can both continue to free skate, or your friend can return to the game's WiFi screen and try the joining process again.

If you do everything quickly enough, you will both be free skating together and can begin playing. I have both PSPs running the game, connected in a WiFi game, and the tray is still open on the host machine.

Depending upon whether you simply free skate, change games, or change boards, you may have to switch several more times after this initial connection is established. You may also try to connect a third PSP by repeating the steps between the PSP hosting the game and this third PSP.

This entire process can take five minutes each time you try, so this little trick, while cool, isn't really a long-term solution for multiplayer WiFi gaming. If you like the game that you are joining in on, you may want to invest in your own copy to prevent this delayed setup process from becoming aggravating over time.