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The Switch 12.0.3 system update was released on June 8, 2021 (UTC). This Switch update was released for the following regions: ALL, and CHN.

Security flaws fixed: <fill this in manually later, see the updatedetails page from the ninupdates-report page(s) once available for now>.

This sysupdate was temporarily not available via sun, which was later restored.


Official ALL change-log:

  • General system stability improvements to enhance the user's experience.

System Titles

The following was updated: SystemVersion/RebootlessSystemUpdateVersion, NgWord/NgWord2, ssl, BootImagePackages.


Only package2 was updated.

Kernel was not updated. The only updated sysmodule (besides buildid) was FS.


FS was recompiled against SDK 12.3.1 which now looks for invalid characters when checking if a path is normalized.


Only 1 func was updated, this func is eventually called from SetSocketDescriptor. This handles SslVersion etc. The code which allowed using TLS 1.3 was removed, the enum bit for V13 is now handled the same as V12.

See Also

System update report(s):

Nintendo Switch System Versions