Switch Firmware 16.0.3 Page

While there aren't any groundbreaking new features in this update, it's essential to keep in mind that Nintendo often includes behind-the-scenes updates to improve the console's security, online connectivity, and overall user experience.

If you are on 16.0.3 now and want to go to the current firmware:

Since you mentioned "long story," I’m going to assume this isn't just a casual update and that you might be in a bit of a predicament (bootloops, update failures, or homebrew/custom firmware issues).