DS Lites are certainly cheap but not that cheap if you want one in good quality. The last three I bought had discolored screens. Many units have problems with the shoulder buttons and hinges due to age. Its been a gamble in my experience. But buying this is the equivalent of buying a brand-new...
Ok so after re-doing all the previous steps, then booting into Hekate then Fusee-Primary THEN use NSA installer I installed a game then booted, got a black screen, hard reset my switch and now the game works?