What a bummer, i completely forgot PKSM don't have support for DS games yet (waiting for someone to develop it). When trying, got stuck in a loading loop until in crashed in a black error screen.
Also tried communication with my NDS Lite, and nothing. I don't know how much far i must go into the game, i just received the Poké Balls from Dawn at Route 202. I went to Sandgem's PC and tried the Union Room. It entered there, but no wireless communication launched. I tried manually turn the wireless On like any 3DS software, but it was no use. Now, i don't know, my battery was at the Red light alread, secongs later it started blinking, so i don't know if the console blocked wireless to save battery life.
Edit: I tried Multiplayer again and worked (Union Room in Platinum). You have to turn Wireless communications ON before booting DSiMenu++ and that will keep until you use it in-game. Tested between my Old 3DS with Platinum (U) (nds bootstrap) and my NDS Lite with Pearl (U) (R4 Revolution). Right now i can't test Battles, i don't have three Lv 30 Pokémon, but i sucesfully traded between the two games.
Also, since DSi Menu ++ uses SAV files for progress, can i take and use save files from emulators and flashcards?
Also, if GBARunner2 can really corrupt the SD card, is it a wise choice to keep it in there?
Good point. Its not worth it. I think a separed download would be better. So can i delet the GBARunner2 files from my SD to prevent myself to acidentaly alunching it?