Okay just make make things clear:
1. Go to store, buy DS Lite (any color )
2. Download 12918-141up.rar,
3. unzip to folder, move ak2ifw_update_141_DSi.nds into a SD micro chip.
4. insert the SD micro chip into Acekard 2i and then insert the Acekard 2i into the DS lite.
5. boot up DS lite, boot...