The Switch 4.0.1 system update was released on October 25, 2017. This Switch update was released for the following regions: ALL.
Security flaws fixed: <fill this in manually later, see the updatedetails page from the ninupdates-report page(s) once available for now>.
Official ALL change-log:
- General system stability improvements to enhance the user's experience, including:
- Changed the HDMI connection process specification to match that of version 3.0.2 to address video and sound output issues with some TV models.
<fill this in (manually) later>