21.0.0 - Revision history

Yellows8: /* System Titles */

2026-02-10T03:31:57Z

System Titles

← Older revision		Revision as of 06:31, 10 February 2026
Line 66:		Line 66:
	** "/lyt/Browse/TapHighlight.arc" added		** "/lyt/Browse/TapHighlight.arc" added
	** "/message/": Various data updated.		** "/message/": Various data updated.
	** "/nro/netfront/core_0/default/" ~~removed~~		** "/nro/netfront/core_0/default/cfi_disabled" moved to "/nro/netfront/core_0/Default/cfi_nocfi".
	** "/nro/netfront/core_0/Default/" ~~added~~		** "/nro/netfront/core_3/default/cfi_enabled" moved to "/nro/netfront/core_3/Default/cfi_nncfi".
	** "/nro/netfront/core_3/default/" ~~removed~~
	** "/nro/netfront/core_3/Default/" ~~added~~
	* Help: "/legallines.htdocs/index.html" updated		* Help: "/legallines.htdocs/index.html" updated
	* NgWord: "/0.txt" updated, "/version.dat" updated		* NgWord: "/0.txt" updated, "/version.dat" updated

Yellows8: /* System Titles */

2026-01-20T04:42:26Z

System Titles

@@ Line 389: / Line 389: @@
 ** The kernel-use of KDynamicSlabHeapPageAllocator::Initialize in resource manager init now panics on failure
 ** There are more cases, too many to fully enumerate with high confidence.
 === [[HID_services|hid]] ===

Yellows8 at 05:36, 18 December 2025

2025-12-18T04:36:55Z

← Older revision		Revision as of 07:36, 18 December 2025
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	Security flaws fixed: yes.		Security flaws fixed: yes.

			As of December 18, 2025 (UTC), this sysupdate (or later?) is now required by [[Network\|dauth]].

	==Change-log==		==Change-log==

Yellows8: /* System Titles */

2025-11-14T18:25:07Z

System Titles

← Older revision		Revision as of 21:25, 14 November 2025
Line 387:		Line 387:
	** The kernel-use of KDynamicSlabHeapPageAllocator::Initialize in resource manager init now panics on failure		** The kernel-use of KDynamicSlabHeapPageAllocator::Initialize in resource manager init now panics on failure
	** There are more cases, too many to fully enumerate with high confidence.		** There are more cases, too many to fully enumerate with high confidence.

			=== [[HID_services\|hid]] ===
			A vuln with hid:dbg was [[Switch_System_Flaws\|fixed]].

	=== [[LDN_services\|ldn]] ===		=== [[LDN_services\|ldn]] ===

SciresM: Fix some kernel diffs that were new in 20.1.0, not 21.0.0. I bindiff'd against 20.0.0, sorry :)

2025-11-12T01:05:30Z

Fix some kernel diffs that were new in 20.1.0, not 21.0.0. I bindiff'd against 20.0.0, sorry :)

← Older revision		Revision as of 04:05, 12 November 2025
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	* HandleFloatingPointException now sets a previously unused StackParameters flag (+0x2F) to 1.		* HandleFloatingPointException now sets a previously unused StackParameters flag (+0x2F) to 1.
	** This flag doesn't seem to be referenced/used anywhere else in the kernel?		** This flag doesn't seem to be referenced/used anywhere else in the kernel?
	* KInterruptManager/Controller was changed:
	** KInterruptController::LocalState now stores the private spendsgir, which is also now saved/restored by KInterruptController::SaveLocalState/RestoreLocalState
	** KSleepManager now spins for 100 microseconds before calling KInterruptManager::Save, after synchronizing all cores.
	* cpu::DoCoreInterruptBarrier now uses a global KLightLock; this prevents more than one thread from performing an interrupt barrier at the same time.
	* KThread StackParameter exception_flags bitflags are now volatile and mostly atomic; many bits now use atomic read-modify-write loops to set and clear bits.		* KThread StackParameter exception_flags bitflags are now volatile and mostly atomic; many bits now use atomic read-modify-write loops to set and clear bits.
	** This is not done for bit 0 ("is in svc"), accesses specifically for bit 0 continue to use non-atomic reads/writes.		** This is not done for bit 0 ("is in svc"), accesses specifically for bit 0 continue to use non-atomic reads/writes.

SciresM: Add 20 -> 21 kernel diff

2025-11-11T17:42:37Z

Add 20 -> 21 kernel diff

← Older revision		Revision as of 20:42, 11 November 2025
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	The anti-downgrade fuses were [[Fuses#Anti-downgrade\|updated]].		The anti-downgrade fuses were [[Fuses#Anti-downgrade\|updated]].

			==== Kernel ====
			* Compiler was upgraded (to clang 18.1.0+).
			** Besides the usual reordering, this is now most noticeable in the following:
			*** Many atomic st(l)xrs now use cmp + csetm + tbz instead of cbnz.
			**** Testing on godbolt indicates this seems to be a change made in clang 18.1.0+ (not present in 17.0.1).
			*** Many cases where they previously did some_condition ? m_a : m_b now have different assembly.
			**** Previously: add Xn, Xz, #A; add Xm, Xz, #B; csel Xn, Xn, Xm; ldr Xn, [Xn]
			**** Now: mov Xn, #A; mov Xn, #B; csel Xn, Xn, Xm; ldr Xn, [Xz, Xn]
			*** Many cases of booleans now explicitly test for 1 instead of <any non-zero value>
			**** Previously: ldrb w8, [x8]; cbz w8, some_loc
			**** Now: ldrb w8, [x8]; cmp w8, #1; b.ne some_loc
			** Many, many cases of superfluous red-black-tree iteration prior to calls to KIntrusiveRedBlackTree::Remove have finally been optimized out.
			*** Basically, KIntrusiveRedBlackTree::erase returns an iterator to the next item in the tree.
			*** Previously, the table walk to find the next item was being performed even when the result was discarded/not-used, which was almost every case.
			*** Now, it's successfully getting optimized out.
			* KAutoObject's class token has been devirtualized.
			** It is now stored as a 16-bit value in previously unused padding bytes, after the reference count.
			** KAutoObject::Create() sets this to the correct value when setting refcount=1.
			** This implementation is generally identical to the one already present in mesosphere.
			* HandleFloatingPointException now sets a previously unused StackParameters flag (+0x2F) to 1.
			** This flag doesn't seem to be referenced/used anywhere else in the kernel?
			* KInterruptManager/Controller was changed:
			** KInterruptController::LocalState now stores the private spendsgir, which is also now saved/restored by KInterruptController::SaveLocalState/RestoreLocalState
			** KSleepManager now spins for 100 microseconds before calling KInterruptManager::Save, after synchronizing all cores.
			* cpu::DoCoreInterruptBarrier now uses a global KLightLock; this prevents more than one thread from performing an interrupt barrier at the same time.
			* KThread StackParameter exception_flags bitflags are now volatile and mostly atomic; many bits now use atomic read-modify-write loops to set and clear bits.
			** This is not done for bit 0 ("is in svc"), accesses specifically for bit 0 continue to use non-atomic reads/writes.
			** This generates pretty terrible assembly for GetThreadUserContext, which now must perform a volatile read of this value over and over in a loop.
			* KIoRegion fields were reordered to save 8 bytes.
			** The 8-byte size/alignment lock field is no longer wedged inbetween two 1-byte booleans.
			* KScheduler::SwitchThread now writes a tick differential (thread->GetCpuTime() - context_switch_time) to user-tls + 0x108.
			** NOTE: This is an ABI change which will not affect official software, but will force any homebrew software which uses TLS-slots to need re-compile.
			* UserspaceAccess::CopyMemoryToUserSize32Bit now takes in a 32-bit word to write, instead of a kernel-pointer-to-32-bit-word.
			* Nintendo appears to have done something akin to marking nn::Result nodiscard + gone through and fixed literally every instance of Result return values not being used.
			** This results in sweeping changes (many Result-return functions are now void return, many new kernel panics, some changed behaviors), including e,g,
			** KInterruptManager::ClearInterrupt no longer checks if a handler has been registered, and always clear the table entry.
			** KInterruptManager::UnbindHandler is now void-return instead of Result; it no longer checks if the handler has been registered, and unconditionally clears to unbound state.
			** KPageTableBase::InitializeForKernel now returns void, and panics if the KMemoryBlockManager::Initialize fails.
			** KDebugBase::OnExitProcess/OnTerminateProcess now return void instead of Result.
			** KEvent/KReadableEvent::Signal/Clear now return void instead of Result; svc::ClearEvent/SignalEvent now just calls the relevant function and returns ResultSuccess.
			** KThreadLocalPage::Finalize now returns void + kernel-panics if unmapping the page fails; KProcess::DeleteThreadLocalRegion now returns void instead of Result.
			** Every kernel-use of KInterruptManager::BindHandler now panics on failure.
			** Every kernel-use of cpu::StoreDataCache and cpu::FlushDataCache and cpu::InvalidateDataCache now panics on failure.
			** Every kernel-use of KThread::Initialize now panics on failure
			** Every kernel-use of KThread::Run now panics on failure.
			** The kernel-use of KDynamicSlabHeapPageAllocator::Initialize in resource manager init now panics on failure
			** There are more cases, too many to fully enumerate with high confidence.

	=== [[LDN_services\|ldn]] ===		=== [[LDN_services\|ldn]] ===

Yellows8 at 16:12, 11 November 2025

2025-11-11T15:12:48Z

← Older revision		Revision as of 18:12, 11 November 2025
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	The Switch 21.0.0 system update was released on November 11, 2025 (UTC). This Switch update was released for the following regions: ALL.		The Switch 21.0.0 system update was released on November 11, 2025 (UTC). 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>~~.		Security flaws fixed: yes.

	==Change-log==		==Change-log==
Line 343:		Line 343:

	The anti-downgrade fuses were [[Fuses#Anti-downgrade\|updated]].		The anti-downgrade fuses were [[Fuses#Anti-downgrade\|updated]].

			=== [[LDN_services\|ldn]] ===
			A vuln was [[Switch_System_Flaws\|fixed]].

	==See Also==		==See Also==

Yellows8: /* System Titles */

2025-11-11T05:48:30Z

System Titles

← Older revision		Revision as of 08:48, 11 November 2025
Line 29:		Line 29:
	** SystemData (non-sysver): CertStore, ErrorMessage, MiiModel, BrowserDll, Help, NgWord, SsidList, TimeZoneBinary, FontNintendoExtension, FontStandard, FontKorean, FontChineseTraditional, FontChineseSimple, FirmwareDebugSettings, BootImagePackage, BootImagePackageSafe, BootImagePackageExFat, FatalMessage, PlatformConfigIcosa, PlatformConfigCopper, PlatformConfigHoag, ControllerFirmware, NgWord2, BootImagePackageExFatSafe, PlatformConfigIcosaMariko, ContentActionTable, NgWordT, PlatformConfigAula, AulaDockFirmware, ClientCertData, GameCardConfigurationData.		** SystemData (non-sysver): CertStore, ErrorMessage, MiiModel, BrowserDll, Help, NgWord, SsidList, TimeZoneBinary, FontNintendoExtension, FontStandard, FontKorean, FontChineseTraditional, FontChineseSimple, FirmwareDebugSettings, BootImagePackage, BootImagePackageSafe, BootImagePackageExFat, FatalMessage, PlatformConfigIcosa, PlatformConfigCopper, PlatformConfigHoag, ControllerFirmware, NgWord2, BootImagePackageExFatSafe, PlatformConfigIcosaMariko, ContentActionTable, NgWordT, PlatformConfigAula, AulaDockFirmware, ClientCertData, GameCardConfigurationData.
	** Applets: qlaunch, auth, cabinet, controller, dataErase, error, playerSelect, swkbd, miiEdit, LibAppletWeb, LibAppletShop, overlayDisp, photoViewer, LibAppletOff, LibAppletLns, LibAppletAuth, "starter" application, myPage, splay.		** Applets: qlaunch, auth, cabinet, controller, dataErase, error, playerSelect, swkbd, miiEdit, LibAppletWeb, LibAppletShop, overlayDisp, photoViewer, LibAppletOff, LibAppletLns, LibAppletAuth, "starter" application, myPage, splay.

			The [[NGCT_services\|ngct]]-sysmodule is now stubbed, the ngct:u service was moved into [[NGC_services\|ngc]].

	[[NPDM]] changes (besides usual version-bump):		[[NPDM]] changes (besides usual version-bump):

Yls8bot at 06:35, 11 November 2025

2025-11-11T05:35:09Z

Show changes

Yls8bot: Created page with "The Switch 21.0.0 system update was released on November 11, 2025 (UTC). This Switch update was released for the following regions: ALL. Security flaws fixed: . ==Change-log== [https://en-americas-support.nintendo.com/app/answers/detail/a_id/22525/kw/nintendo%20switch%20system%20update Official] ALL change-log: * * Added symbols above software icons..."

2025-11-11T03:25:15Z

Created page with "The Switch 21.0.0 system update was released on November 11, 2025 (UTC). 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>. ==Change-log== [https://en-americas-support.nintendo.com/app/answers/detail/a_id/22525/kw/nintendo%20switch%20system%20update Official] ALL change-log: * * Added symbols above software icons..."

New page

The Switch 21.0.0 system update was released on November 11, 2025 (UTC). 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>.

==Change-log==
[https://en-americas-support.nintendo.com/app/answers/detail/a_id/22525/kw/nintendo%20switch%20system%20update Official] ALL change-log:
*
* Added symbols above software icons displayed on the HOME Menu to indicate whether the software is a physical or a digital version.
* Added the ability to download data for a virtual game card even if the “Use Online License" setting is turned off.
*
* This option is available in the Options of a virtual game card when accessed via Virtual Game Cards from the HOME Menu.
*
*
* The information regarding Save Data Cloud Backup that appears when launching certain software has been updated.
* The option "Platinum Point Notification Settings” was renamed to "Nintendo Switch Online Notification Settings" in the Notifications menu in System Settings.
* Added the ability to disable the following options when performing a system transfer from a Nintendo Switch system to a Nintendo Switch 2 system using System Transfer to Nintendo Switch 2 in System Settings.
*
* Redownload Software on Nintendo Switch 2
* Transfer Album Data
*
*
* Added the ability to adjust the volume from the Quick Settings menu while in VR mode.
* General system stability improvements to enhance the user's experience.
*

==System Titles==
* The following titles were updated:
** Sysmodules: usb, htc.stub, boot2.ProdBoot, settings, Bus, bluetooth, bcat, friends, nifm, ptm, bsdsocket, hid, audio, LogManager.Prod, wlan, ldn, nvservices, pcv, capmtp, nvnflinger, pcie, account, ns, nfc, psc, capsrv, am, ssl, nim, btm, erpt, vi, pctl, npns, eupld, glue, eclct, es, fatal, creport, ro, sdb, grc, migration, jpegdec, safemode, olsc, ngct, jit, pgl, omm, eth, ngc.
** SystemData (non-sysver): CertStore, ErrorMessage, MiiModel, BrowserDll, Help, NgWord, SsidList, TimeZoneBinary, FontNintendoExtension, FontStandard, FontKorean, FontChineseTraditional, FontChineseSimple, FirmwareDebugSettings, BootImagePackage, BootImagePackageSafe, BootImagePackageExFat, FatalMessage, PlatformConfigIcosa, PlatformConfigCopper, PlatformConfigHoag, ControllerFirmware, NgWord2, BootImagePackageExFatSafe, PlatformConfigIcosaMariko, ContentActionTable, NgWordT, PlatformConfigAula, AulaDockFirmware, ClientCertData, GameCardConfigurationData.
** Applets: qlaunch, auth, cabinet, controller, dataErase, error, playerSelect, swkbd, miiEdit, LibAppletWeb, LibAppletShop, overlayDisp, photoViewer, LibAppletOff, LibAppletLns, LibAppletAuth, "starter" application, myPage, splay.

[[NPDM]] changes (besides usual version-bump):
* Bus: KernelCap HandleTableSize: removed HandleTableSize=0x100.
* bcat: Service access: removed bsdcfg, npns:u.
* friends: Service access: removed bsdcfg.
* ptm: Service server access: added fgm:0, fgm, fgm:9, removed fgm*.
* capmtp: Service access: removed fsp-srv, lm.
* ns: Service access: removed htc.
* psc: Service server access: added psc:c, psc:l, psc:m, srepo:a, srepo:u, removed psc*, srepo:*.
* npns: Service access: removed time:u.
* eclct: Service access: removed npns:s, psc:m.
* sdb: Service access: removed set.
* migration: Service access: removed nim:shp.
* pgl: Service access: removed erpt:c, lm, set.
* ngc: Service server access: added ngct:u.
* LibAppletShop: Service access: added friend:m.
* overlayDisp: Service access: added mnpp:sys.

RomFs changes:
* ErrorMessage: updated
* BrowserDll:
** "/browser/effective_tld_names.dat" updated
** "/browser/icudt62l.dat.lz4" added
** "/browser/MediaControls.css" updated
** "/browser/MediaControlsInline.css" updated
** "/browser/MediaControlsInline.js" updated
** "/browser/MediaControls.js" updated
** "/browser/RootCaSdkAdditional.pem" updated
** "/buildinfo/buildinfo.dat" updated
** "/lyt/": Various data updated.
** "/lyt/Browse/NodeMouse.arc" removed
** "/lyt/Browse/TapHighlight.arc" added
** "/message/": Various data updated.
** "/nro/netfront/core_0/default/" removed
** "/nro/netfront/core_0/Default/" added
** "/nro/netfront/core_3/default/" removed
** "/nro/netfront/core_3/Default/" added
* Help: "/legallines.htdocs/index.html" updated
* NgWord: "/0.txt" updated, "/version.dat" updated
* [[System_Version_Title|SystemVersion]]: All files updated.
* TimeZoneBinary: updated
* [[System_Settings|FirmwareDebugSettings/PlatformConfigIcosa/PlatformConfigCopper/PlatformConfigHoag/PlatformConfigIcosaMariko/PlatformConfigAula]]: All files updated.
* ControllerFirmware: "/FirmwareInfo.csv" updated, "/ukyosakyo_ep2_ota.bin" updated
* NgWord2: updated
* RebootlessSystemUpdateVersion: All files updated.
* qlaunch applet:
** "/lyt/": Various data updated.
** "/message/": Various data updated.
** "/sound/qlaunch_action.bksnd" updated
** "/sound/qlaunch.bfsar" updated
* auth applet:
** "/message/": Various data updated.
** "/sound/auth_action.bksnd" updated
* cabinet applet:
** "/lyt/": Various data updated.
** "/message/": Various data updated.
** "/sound/cabinet_action.bksnd" updated
* controller applet:
** "/lyt/": Various data updated.
** "/message/": Various data updated.
** "/sound/controller_action.bksnd" updated
* dataErase applet:
** "/lyt/": Various data updated.
** "/message/": Various data updated.
** "/sound/dataErase_action.bksnd" updated
* error applet:
** "/lyt/": Various data updated.
** "/message/": Various data updated.
** "/sound/error_action.bksnd" updated
* playerSelect applet:
** "/lyt/": Various data updated.
** "/message/": Various data updated.
** "/sound/playerSelect_action.bksnd" updated
* swkbd applet:
** "/message/": Various data updated.
** "/sound/swkbd_action.bksnd" updated
* overlayDisp applet:
** "/lyt/": Various data updated.
** "/message/": Various data updated.
** "/sound/overlayDisp_action.bksnd" updated
* photoViewer applet:
** "/lyt/": Various data updated.
** "/message/": Various data updated.
** "/sound/photoViewer_action.bksnd" updated
* [[Internet_Browser|LibAppletOff/LibAppletWeb/LibAppletShop/LibAppletLns/LibAppletAuth]]: All files updated.
* "starter" application:
** "/lyt/": Various data updated.
** "/message/": Various data updated.
** "/sound/starter_action.bksnd" updated
* myPage applet:
** "/lyt/": Various data updated.
** "/message/": Various data updated.
** "/sound/myPage_action.bksnd" updated
* splay applet:
** "/lyt/": Various data updated.
** "/message/": Various data updated.
** "/sound/splay_action.bksnd" updated

=== BootImagePackages ===
RomFs changes: all files updated.

Using updated master-key: master_key_14 (previously master_key_13). See [[NCA]] for the KeyGeneration listing.

The anti-downgrade fuses were [[Fuses#Anti-downgrade|updated]].

==See Also==
System update report(s):
* [https://yls8.mtheall.com/ninupdates/reports.php?date=2025-11-11_03-15-07&sys=hac]

{{NavboxVersions}}