Can't play ds fireline (100 games in 1) in dsi

if dsi has game go to ds download play on 3ds and press nintendo ds, but if 3ds has game(ds or dsi game in slot) press multiplayer on dsi to communicate

How to Get WiFi for DS

Depending on which DS you purchase, you can use the console's Wi-Fi settings to play games against other players around the world or download additional content. The Nintendo DS and Nintendo DSi allows for gamers to compete with one another as long as the game being played supports these connections. The DSi features a built-in web browser as well as a store where entire games can be purchased and downloaded. In order to access these features on either console, games must first locate and connect to a wireless access point.
Difficulty:Easy Instructions Things You'll Need

• Nintendo DS or DSi

1. Connecting with a DS or DS Lite
   • 1 Insert a game cartridge into your DS and power it on. Begin the game, and on the main menu, choose the option for setting up a Wi-Fi connection. The location of this option differs in each game, so check your game's manual for where to find this option.
     
   • 2 Choose "Nintendo Wi-Fi Connection Settings" from the setup screen and press "A" to select this option. Choose one of the connection spaces to use for this location. You can save up to three locations at a time.
     
   • 3 Select "Search for an Access Point" and press "A". On the next screen, choose the blue padlock. This is an open connection. Selecting it will connect your DS to this wireless connection.
     
   • 4 Return to the main menu of your game by pressing "B". You can now play games over the Wi-Fi connection.
     
   Connecting with a DSi
   • 1 Power on your DSi and wait until the main menu opens up. Once on the main menu, scroll until you see the "Settings" tab, which is illustrated by a wrench. Tap on it to open the menu.
     
   • 2 Click the right arrow until you reach the third page of the System Settings menu. On this page, select the last option, which is labeled as "Internet". Select "Connection Settings" from the next menu. This item will have an image of the DSi to the right of the option.
     
   • 3 Choose one of the connection boxes to set up a new Wi-Fi connection. These will have the word "None" listed. You can have up to three saved connections on the DSi at any given time.
     
   • 4 Tap the top box on the Connection page. This will automatically search out a wireless access point for you to use on your DSi. Choose an access point with an unlocked icon; these connections do not require an administrator password to access.
     
   • 5 The DSi will test the connection, after which you'll be able to play games online, download new content or browse the Internet.
     

Tips & Warnings

• Not all DS games can be played online. Check the back of the game's box to see if it supports a Nintendo Wi-Fi connection
  
• The Nintendo DS cannot connect to secure networks. The DSi requires a password from the administrator to connect to these networks.
  

or visit the link below for more info...

Read more: How to Get WiFi for DS ' eHow.com http://www.ehow.com/how_5525344_wifi-ds.html#ixzz1OygK188n

please rate me if this help you thank you sir....

it might be because you have a DSi, and your sister has a DS or DS lite

if so you cannot play some games because DSi are region locked, basically an US DSi can only play US games, a japanese DSi can only play japanese games etc etc,

DS and DS lite are not region locked and can play any game

Yes all Nintendo DS games will work on the Nintendo DSI. However unlike the original Nintendo DS or DS lite the DSi will not play Gameboy advance games. If this help please rate me. I do not get paid for this but like to help people.

From Wiki:

"The immediate successor to the Nintendo DS, the Nintendo DSi, is region-locked, but only in terms of its downloadable games. Physical DS game carts will play on it regardless of region of origin (DSi-only and even DSi-enhanced games are region-locked though)."

it seems the problem is with the R4 card not the memory card. take game out make sure connections going into the ds are good. try blowing it out like old school nintendo. i have a r4 with my ds lite and sometimes it wont work i have to try a couple times

It sounds like it's a DSi game you've bought, correct?
Those are unfortunately (and stupidly IMO) region locked, and you will not be able to run it.
If it is however just a DS game, there's no reason it wouldn't work, that being the case let me know what game it is and I'll see what info I can dig up!

its probably the wrong ds or its broken

dsi and my ds wont play games ds played 1 game yesterday but as stopped again

I have this issue also and i only bought mine last week. I have a DSi and the card is for a DSi. During glame play it froze so i turned it off and back on and then its saying theres no card inserted in the DS Game card slot.
I have a DSi version 1.3A <does this make a difference?
It was working fine before.