Multiplayer problems... (mk4 + supercard lite)

[chooob]

I got a MK4 key and a supercard lite adapter. I can get games to play on either of my DS's(I have two DS lite versions - one from EU the other from the US) fine.

My problem comes when i try to play a NDS game on Multipalyer (Single Card) the one without the card will see the game fine but once connected and going to load the game the screen will turn White with the nintendo logo dim in the top screen. At the same time the wireless light will become solid and stop flashing. On the DS with the MK4 in it, it will say that connection has been lost press a to continue.

Is there anyway to get multiplayer to work? I have tried it on about 10 different games some (E) some (U) region. Any suggestions?
Thanks in advance

[sven]

it's a problem with the supercard. but from what i understand many flashcarts have problems with multiplayer(not wi-fi only local)

[chooob]

So there is no way for me to be able to have multiplayer working with supercard? (or any other card...)

[sven]

I don't know, maybe ask on a supercard site.
maybe with new software it works. as far as i now tetris ds works in multiplayer card on the neo2 cards. so probally more will work.

[chooob]

OK, tnx for your help
Just out of wonder.. would multiplayer work if i have two DS's with supercard and mk4?

[sven]

no idea.

btw i remember something i'm not sure about.
people reported once a long time ago if i'm coorect that it does work when both ds's have the same firmware.

[chooob]

How do i find which firmware i have ?

[sven]

DS firmware versions
 
Nintendo DS Lite showing the firmware version by way of the Pictochat Test

The firmware version of a DS can be confirmed using the Pictochat Test, [1] [2] also called TakeMeOut: [3]
Insert a DS cartridge into the DS.
Turn on the DS, open Pictochat and enter room A.
Remove the cartridge.
Both screens should now be filled with a solid color.
Additionally, this color is also shown for a brief second before the DS enters Sleep Mode when the lid is closed.
Version 1: The DS will freeze
Version 2: Grayish Blue
Version 3: Dark Green
Version 4: Yellow
Version 5: Magenta
Version 6: Blue
Version 7?: Purple
iQue: Dark Green   (special chinese ds)
DS Lite: Purple
FlashMe: Dark Green  (when you flashed you're ds with costum firmware)