: Open the DBI homebrew app and select Run MTP responder . Connect your Switch to a PC via USB-C. Drag and drop your NSP update and DLC files directly into the "Install" folder on your PC's file explorer.
: Search for the "Free Songs Pack" on the eShop product page under Downloadable Content to manually activate and download it. Manual Installation (NSP/Modded Systems) Let’s Sing 2022 Switch NSP Update DLC (eShop)
If you purchased the game or DLC digitally through the Nintendo eShop , follow these steps: : Open the DBI homebrew app and select Run MTP responder