Hacking Boot directly to SC Rumble using Slot1 (not superkey)?

[Dark^'^Knigh]

Bit of a strange question, but I have an immediate need to have this question answered, please.
I have two DS consoles, 2 SC Rumble carts, one Slot1 (M3DS Real) & one Superkey.

My dilemma is I need to have both systems running as SC Rumbles today (long story...don't ask me why!). I do not want the M3/Sakura interface showing upon boot up, I need tghem both to look exactly the same. I tried to hold down "select" upon boot up and it switched to Slot2 GBA...but I need to have SC Rumble GUI to show and DS roms.

Is it possible?

 

[sidneyyoung]

Press L+B to boot slot-2 in ds mode.

 

[Dark^'^Knigh]

Perfect!! Thank you very much

 

[DanTheManMS]

You could also install FlashMe on the one DS so it boots the slot-2 SC Rumble in DS mode automatically.

 

[golden]

I just don't understand why you couldn't just wait and use the M3 to boot the supercard. It only takes like 1 extra second.