Enabling DS Download Play and Pictochat in DS Classic Menu - Epicpkmn11/TWiLightMenu GitHub Wiki

If you're using a DSi console, you should already be able to launch those apps.
Otherwise, if you have a 3DS, proceed below.

In GodMode9:

• Press R+A on SYSNAND TWLN.
• Select Search for titles.
• Select DS Download Play (NTR-HNDA).tmd.
• Select TMD file options....
• Select Dump CXI/NDS file.
• Done. It should be under sdmc:/gm9/out/, as DS Download Play (NTR-HNDA).nds.

Copy to sd:/_nds/, and rename to dlplay.nds.

The above steps will increase DLP boot speed.

To run Pictochat on 3DS (DSi required):

• Copy pictochat.nds from sd:/_nds/ on the DSi SD card, on the 3DS SD card, also in sd:/_nds/. You must first access the DS Classic Menu in TWiLight Menu++ on the DSi.