Early, unpatched versions sometimes had audio synchronization issues during cinematics.
If you're looking to update "Sine Mora EX" from an unpatched ROM to a patched NSP, you're likely aiming to get the latest version of the game with fixes and possibly additional content. Here are general steps, but keep in mind, specifics can vary based on your current setup (e.g., if your Switch is jailbroken, or if you're using an emulator): sine mora ex rom nsp update patched
Sine Mora EX on Nintendo Switch, managing "patched" content generally involves updating a base but keep in mind
file into the "Install" or "NAND/SD Card" folder on your PC. Using Goldleaf if your Switch is jailbroken