dldi is a virus on handhelds and have been spreading since the nintendo's gameboy.
games that were bought have been secretly infected with dldi, which actually caused the handhelds to brick.
Unfortunatly, this virus was transmitted through radio waves, which later has caused nintendo to create a new handheld, the gameboy color. The gameboy color actually was smaller in size and was able to display many color at once. While adding these new functions, nintendo also implemented an anti dldi shield on the A and B keys. But Nentendo, now called the R4 team, strengthened this electronic virus and was able to destroy the gameboy colors. Nintendo went through many changes, such as the gameboy advanced, and the gameboy SP. The new NDS lite even now have clear cases for protection from dldi.
As the R4's clone teams are increasing, the supporters of the dldi virus increased, leading to today, where everybody started to hate the R4 team.
but luckily, Dr. Chishm, a well known doctor created a cure for this disease, called the dldi patch.
this patch worked like a charm, where many homebrew we downloaded started to protect our DSs from this deadly virus.