9.1.0

The Switch 9.1.0 system update was released on December 4, 2019. This Switch update was released for the following regions: ALL.

Security flaws fixed: yes.

Change-log

Official ALL change-log:

• General system stability improvements to enhance the user's experience, including a solution for the following:
• Resolved an issue where the color animation was not displaying correctly when attaching a Joy-Con controller to the Nintendo Switch console.

See the official China changelog for the China-specific changelog.

BootImagePackage

All files in RomFS were updated.

Secure Monitor

Secure Monitor was updated.

• System register configuration now sets CPUACTLR_EL1.
  • This sets CPUACTLR_EL1 to the same value as in KernelLdr, previously this code only configured CPUECTLR_EL1.

Warmboot

• The firmware revision magic was changed from 0x16B to 0x18C.

<check back for more diffs later>

FIRM Sysmodules

FIRM sysmodules were updated. Specific diffs available below:

FS

The only difference is that nn::crypto::VerifyRsa2048PssSha256 now memsets the decrypted signature buffer to zero after extracting the hash.

Loader

The only difference besides GNU build hash update is that the Anti-Downgrade arrays were updated to the new title versions.

System Titles

The following was updated:

• All applets.
• Sysmodules: bcat, friends, nifm, bsdsockets, hid, wlan, ldn, account, ns, nfc, am, nim, erpt, creport, ro, migration, olsc, and ngct.
• SystemData (besides the sysver SystemData): ErrorMessage, BrowserDll, Help, SharedFont, LocalNews, Eula, FirmwareDebugSettings, all BootImagePackages, PlatformConfigIcosa, PlatformConfigCopper, PlatformConfigHoag, PlatformConfigIcosaMariko, and NgWordT.

See Services_API for the new lp2p:m service.

NPDM changes:

• migration: Now has access to srepo:u.
• The following now have access to the new lp2p:m service: qlaunch, LibraryAppletCabinet, LibraryAppletController, LibraryAppletNetConnect, LibraryAppletPlayerSelect, LibraryAppletMiiEdit, all web-applets except for LibraryAppletOfflineWeb, OverlayApplet, and LibraryAppletMyPage.

See Also

System update report(s):

• [1]