Hacking Secret GBA menu?

[Gerinych]

I got a half-broken DS Lite Onyx as a result of my crappy shell replacement. There is no top screen, speakers, mic, or a WiFi chip. It doesn't start, when I power it on, the screen just flashes once, then the system shuts off. Since then I was trying to maximize it's capabilities.
Weird or not, I tried to press L+A+Y+X+B at the startup. For some reason, a GBA boot screen came up. It doesn't say Nintendo, just the GameBoy animation, and it stops at that point. Note that I didn't have anything stuck in my Slot-2.
It gets more weirder. My other, new DS, doesn't do that. I checked, they both have the same firmware, same settings, the only difference is that the new one's from a GH: On Tour bundle, but I think that doesn't really matter.
I don't have any GBA games, so I can't test anything like that.
Clue me in anyone?

 

[cracker]

Congratulations! You have a half broken flashed DS Lite.

A+B+X+Y boots to Slot 2 and since there wasn't a cart there it hung.

 

[Gerinych]

So you're saying if I stick a GBA game in there, it will work? Cool, I was kinda going for that.

 

[cracker]

As long as Slot 2 is still working then it will.

I would ask you what the hell happened during your shell replacement but I'm sure you don't want to relive it again.

 

[Gerinych]

As long as Slot 2 is still working then it will.

I would ask you what the hell happened during your shell replacement but I'm sure you don't want to relive it again.

Naw, I'm fine about that.
I was taking apart my top screen, so I had to disconnect the cables. When I replaced the case, I had to feed the cable through that hole, but I think it took some damage. Also, I accidentally disconnected speaker wires from the speakers.

 

[Ferrariman]

Wow, you turned your DS into a GBA

 

[Rowan]

yh only really clever people can do that instead of playing both ds and gba
Amazingly it has been converted so it can play only the one gba game

 

[Vapourstreak]

hahah good job. i didnt noe about that before

 

[Gerinych]

Well, the thing is that my new DS doesn't do that, as I mentioned.