Most users searching for a "Nintendo Switch UI download link" are looking for . To change the layout, colors, or icons of your Switch, you must be running custom firmware (CFW), such as Atmosphere . Where to Find Theme Downloads
If you are a developer or designer looking for a "download link" for Switch UI assets (buttons, icons, layouts) to use in mockups: nintendo switch ui download link
If you want to experience the Switch interface and games on other devices: How to Update Software on Nintendo Switch | Support Most users searching for a "Nintendo Switch UI
There is you can visit on a PC to download the UI as a file. Doing so would be useless, as the Switch only installs encrypted, signed packages from Nintendo’s CDN (Content Delivery Network). This security measure prevents custom firmware or malicious UI modifications. Doing so would be useless, as the Switch