Settings services

set

This is "nn::settings::ISettingsServer".

Cmd	Name	Notes
0	GetLanguageCode	No input, returns an output #LanguageCode. This is the current system language.
1	GetAvailableLanguageCodes	Takes a type-0xA buffer containing the #LanguageCode output array, returns an output s32.
2	[4.0.0+] MakeLanguageCode	Takes an input #Language, returns an output #LanguageCode.
3	GetAvailableLanguageCodeCount	No input, returns an output s32.
4	GetRegionCode	No input, returns an output s32.
5	[4.0.0+] GetAvailableLanguageCodes2	Takes a type-0x6 buffer containing the #LanguageCode output array, returns an output s32.
6	[4.0.0+] GetAvailableLanguageCodeCount2	No input, returns an output s32.
7	[4.0.0+] GetKeyCodeMap

[4.0.0+] Official user-processes now use GetAvailableLanguageCodes2/GetAvailableLanguageCodeCount2 instead of {original commands}.

In official user-processes in the #Language->#LanguageCode conversion function (MakeLanguageCode):

• During one-time init, GetAvailableLanguageCodes is used to initialize the LanguageCodes array cache, with max_entries=0xF (buffer size in u64s). [4.0.0+] GetAvailableLanguageCodes2 is now used with max_entries 0x40.
• [4.0.0+] When the input #Language is larger than the cached total_entries from the above command output, or #Language is negative, command MakeLanguageCode is used instead of the array.

GetKeyCodeMap

Takes a type-0x16 output buffer containing KeyCodeMap, official sw uses fixed size 0x1000. This is probably related to HID keyboard.

Language

"nn::settings::Language" (s32) is basically array indices in the output array from GetAvailableLanguageCodes.

LanguageCode

This is "nn::settings::LanguageCode".

This is an u64, which is a NUL-terminated string.

Array-index / #Language	#LanguageCode	Icon language filename
0	ja	"Japanese"
1	en-US	"AmericanEnglish"
2	fr	"French"
3	de	"German"
4	it	"Italian"
5	es	"Spanish"
6	zh-CN	"Chinese"
7	ko	"Korean"
8	nl	"Dutch"
9	pt	"Portuguese"
10	ru	"Russian"
11	zh-TW	"Taiwanese"
12	en-GB	"BritishEnglish"
13	fr-CA	"CanadianFrench"
14	es-419	"LatinAmericanSpanish"
[4.0.0+] 15	zh-Hans	"SimplifiedChinese"
[4.0.0+] 16	zh-Hant	"TraditionalChinese"

set:fd

This is "nn::settings::IFirmwareDebugSettingsServer".

Cmd	Name	Notes
2	SetSettingsItemValue
3	ResetSettingsItemValue
4	CreateSettingsItemKeyIterator	Returns an #ISettingsItemKeyIterator.
10	[4.0.0+] ReadSettings
11	[4.0.0+] ResetSettings
20	[4.0.0+] SetWebInspectorFlag
21	[4.0.0+] SetAllowedSslHosts
22	[4.0.0+] SetHostFsMountPoint

ISettingsItemKeyIterator

Cmd	Name
0	GoNext
1	GetKeySize
2	GetKey

set:cal

This is "nn::settings::IFactorySettingsServer".

Cmd	Name
0	GetBluetoothBdAddress
1	GetConfigurationId1
2	GetAccelerometerOffset
3	GetAccelerometerScale
4	GetGyroscopeOffset
5	GetGyroscopeScale
6	GetWirelessLanMacAddress
7	GetWirelessLanCountryCodeCount
8	GetWirelessLanCountryCodes
9	GetSerialNumber
10	SetInitialSystemAppletProgramId
11	SetOverlayDispProgramId
12	GetBatteryLot
14	#GetEciDeviceCertificate
15	#GetEticketDeviceCertificate
16	#GetSslKey
17	#GetSslCertificate
18	#GetGameCardKey
19	#GetGameCardCertificate
20	#GetEciDeviceKey
21	#GetEticketDeviceKey
22	GetSpeakerParameter
23	[4.0.0+] GetLcdVendorId
24	[5.0.0+]
25	[5.0.0+]
26	[5.0.0+]
27	[5.0.0+]
28	[5.0.0+]
29	[5.0.0+]
30	[5.0.0+]
31	[5.0.0+]
32	[5.0.0+]

Used for accessing data calibrated at the factory.

GetEciDeviceCertificate

Takes a type-0x16 output buffer with fixed size 0x180.

Returns the device certificate (ECC signed). This is identical to 3DS DeviceCert/CTCert besides the strings. NIM loads the DeviceId from this.

GetEticketDeviceCertificate

Takes a type-0x16 output buffer with fixed size 0x240.

Returns the ETicket certificate (RSA signed).

GetSslKey

Takes a type-0x16 output buffer with fixed size 0x134.

Returns the extended SSL key (0x130 bytes) from CAL0. If the extended key is not programmed then it falls back to the normal SSL key (0x110 bytes).

Used by SSL-sysmodule, see here.

GetSslCertificate

Takes a type-0x16 output buffer with fixed size 0x804.

Returns a container with the plaintext SSL certificate.

Used by SSL-sysmodule, see here.

GetGameCardKey

Takes a type-0x16 output buffer with fixed size 0x134.

Returns the extended GameCard key (0x130 bytes) from CAL0. If the extended key is not programmed then it falls back to the normal GameCard key (0x110 bytes).

GetGameCardCertificate

Takes a type-0x16 output buffer with fixed size 0x404.

Returns a container with the GameCard certificate.

GetEciDeviceKey

Returns the extended device ECC-B233 key (0x50 bytes) from CAL0. If the extended key is not programmed then it falls back to the normal device ECC-B233 key (0x30 bytes).

GetEticketDeviceKey

Takes a type-0x16 output buffer with fixed size 0x244.

Returns the extended ETicket RSA-2048 key (0x240 bytes) from CAL0. If the extended key is not programmed then it falls back to the normal ETicket RSA-2048 key (0x220 bytes).

setcal Container Structure

Offset	Size	Name
0x0	0x4	Size (same size used for decryption if needed)
0x4	{above size}	Actual data starts here.

This container is used for returning data with variable sizes.

set:sys

This is "nn::settings::ISystemSettingsServer".

Cmd	Name
0	SetLanguageCode
1	SetNetworkSettings
2	GetNetworkSettings
3	#GetFirmwareVersion
4	[3.0.0+] GetFirmwareVersion2
7	GetLockScreenFlag
8	SetLockScreenFlag
9	GetBacklightSettings
10	SetBacklightSettings
11	SetBluetoothDevicesSettings
12	GetBluetoothDevicesSettings
13	GetExternalSteadyClockSourceId
14	SetExternalSteadyClockSourceId
15	GetUserSystemClockContext
16	SetUserSystemClockContext
17	GetAccountSettings
18	SetAccountSettings
19	GetAudioVolume
20	SetAudioVolume
21	GetEulaVersions
22	SetEulaVersions
23	#GetColorSetId
24	#SetColorSetId
25	GetConsoleInformationUploadFlag
26	SetConsoleInformationUploadFlag
27	GetAutomaticApplicationDownloadFlag
28	SetAutomaticApplicationDownloadFlag
29	GetNotificationSettings
30	SetNotificationSettings
31	GetAccountNotificationSettings
32	SetAccountNotificationSettings
35	GetVibrationMasterVolume
36	SetVibrationMasterVolume
37	GetSettingsItemValueSize
38	#GetSettingsItemValue
39	GetTvSettings
40	SetTvSettings
41	GetEdid
42	SetEdid
43	GetAudioOutputMode
44	SetAudioOutputMode
45	IsForceMuteOnHeadphoneRemoved
46	SetForceMuteOnHeadphoneRemoved
47	GetQuestFlag
48	SetQuestFlag
49	GetDataDeletionSettings
50	SetDataDeletionSettings
51	GetInitialSystemAppletProgramId
52	GetOverlayDispProgramId
53	GetDeviceTimeZoneLocationName
54	SetDeviceTimeZoneLocationName
55	GetWirelessCertificationFileSize
56	GetWirelessCertificationFile
57	SetRegionCode
58	GetNetworkSystemClockContext
59	SetNetworkSystemClockContext
60	IsUserSystemClockAutomaticCorrectionEnabled
61	SetUserSystemClockAutomaticCorrectionEnabled
62	#GetDebugModeFlag
63	GetPrimaryAlbumStorage
64	SetPrimaryAlbumStorage
65	GetUsb30EnableFlag
66	SetUsb30EnableFlag
67	GetBatteryLot
68	#GetSerialNumber
69	GetNfcEnableFlag
70	SetNfcEnableFlag
71	GetSleepSettings
72	SetSleepSettings
73	GetWirelessLanEnableFlag
74	SetWirelessLanEnableFlag
75	GetInitialLaunchSettings
76	SetInitialLaunchSettings
77	GetDeviceNickName
78	SetDeviceNickName
79	GetProductModel
80	GetLdnChannel
81	SetLdnChannel
82	AcquireTelemetryDirtyFlagEventHandle
83	GetTelemetryDirtyFlags
84	GetPtmBatteryLot
85	SetPtmBatteryLot
86	GetPtmFuelGaugeParameter
87	SetPtmFuelGaugeParameter
88	GetBluetoothEnableFlag
89	SetBluetoothEnableFlag
90	GetMiiAuthorId
91	SetShutdownRtcValue
92	GetShutdownRtcValue
93	AcquireFatalDirtyFlagEventHandle
94	GetFatalDirtyFlags
95	[2.0.0+] GetAutoUpdateEnableFlag
96	[2.0.0+] SetAutoUpdateEnableFlag
97	[2.0.0+] GetNxControllerSettings
98	[2.0.0+] SetNxControllerSettings
99	[2.0.0+] GetBatteryPercentageFlag
100	[2.0.0+] SetBatteryPercentageFlag
101	[2.0.0+] GetExternalRtcResetFlag
102	[2.0.0+] SetExternalRtcResetFlag
103	[3.0.0+] GetUsbFullKeyEnableFlag
104	[3.0.0+] SetUsbFullKeyEnableFlag
105	[3.0.0+] SetExternalSteadyClockInternalOffset
106	[3.0.0+] GetExternalSteadyClockInternalOffset
107	[3.0.0+] GetBacklightSettingsEx
108	[3.0.0+] SetBacklightSettingsEx
109	[3.0.0+] GetHeadphoneVolumeWarningCount
110	[3.0.0+] SetHeadphoneVolumeWarningCount
111	[3.0.0+] GetBluetoothAfhEnableFlag
112	[3.0.0+] SetBluetoothAfhEnableFlag
113	[3.0.0+] GetBluetoothBoostEnableFlag
114	[3.0.0+] SetBluetoothBoostEnableFlag
115	[3.0.0+] GetInRepairProcessEnableFlag
116	[3.0.0+] SetInRepairProcessEnableFlag
117	[3.0.0+] GetHeadphoneVolumeUpdateFlag
118	[3.0.0+] SetHeadphoneVolumeUpdateFlag
119	[3.0.0+] NeedsToUpdateHeadphoneVolume
120	[3.0.0+] GetPushNotificationActivityModeOnSleep
121	[3.0.0+] SetPushNotificationActivityModeOnSleep
122	[4.0.0+] #GetServiceDiscoveryControlSettings
123	[4.0.0+] SetServiceDiscoveryControlSettings
124	[4.0.0+] GetErrorReportSharePermission
125	[4.0.0+] SetErrorReportSharePermission
126	[4.0.0+] GetAppletLaunchFlags
127	[4.0.0+] SetAppletLaunchFlags
128	[4.0.0+] GetConsoleSixAxisSensorAccelerationBias
129	[4.0.0+] SetConsoleSixAxisSensorAccelerationBias
130	[4.0.0+] GetConsoleSixAxisSensorAngularVelocityBias
131	[4.0.0+] SetConsoleSixAxisSensorAngularVelocityBias
132	[4.0.0+] GetConsoleSixAxisSensorAccelerationGain
133	[4.0.0+] SetConsoleSixAxisSensorAccelerationGain
134	[4.0.0+] GetConsoleSixAxisSensorAngularVelocityGain
135	[4.0.0+] SetConsoleSixAxisSensorAngularVelocityGain
136	[4.0.0+] GetKeyboardLayout
137	[4.0.0+] SetKeyboardLayout
138	[4.0.0+] GetWebInspectorFlag
139	[4.0.0+] #GetAllowedSslHosts
140	[4.0.0+] GetHostFsMountPoint
141	[5.0.0+]
142	[5.0.0+]
143	[5.0.0+]
144	[5.0.0+]
145	[5.0.0+]
146	[5.0.0+]
147	[5.0.0+]
148	[5.0.0+]
149	[5.0.0+]

Official user-processes get a new service session handle each time a set:sys cmd is used, with the session being closed aftewards.

GetFirmwareVersion

Takes a type-0x1A output buffer. User-processes use hard-coded size 0x100.

If needed, reads the content of the System_Version_Title "/file" into state. This is only done once.

Then the above 0x100-byte data is copied to the output buffer.

GetColorSetId

No input, returns an output s32.

This is the current Theme set by System Settings.

• 0: "Basic White"
• 1: "Basic Black"

SetColorSetId

Takes an input s32, no output.

GetSettingsItemValue

Takes two type-0x19 input buffers and a type-0x6 output buffer. Returns an output u64 for the actual size written to the outbuf.

The outbuf_size is compared with the config_size. When config_size is larger than outbuf_size, outbuf_size is used for the memcpy, otherwise config_size is used. Afterwards the size used for the memcpy is written to output(see above).

If loading from main config fails, it will also attempt to load config from various state if the input strings match hard-coded strings.

GetDebugModeFlag

Returns an output u8.

Loads the 1-byte config for <"settings_debug", "is_debug_mode_enabled">. If that fails, value 0x1 is written to output. This uses the same func as ReadSetting internally.

Returned retval is always 0.

GetSerialNumber

Returns the 0x18-byte SerialNumber string.

GetServiceDiscoveryControlSettings

Returns 0x01 if safemode needs to be launched.

GetAllowedSslHosts

Takes a type-0x6 output buffer, returns an output s32. This buffer contains an array of 0x8-byte "nn::settings::system::AllowedSslHost" entries.

System Config

There's a common config title (*818), and a config title for each HardwareType.

[5.0.0+] New config fields were added to the HardwareType-specific config:

• "systeminitializer!eks_enabled" 1 for non-Mariko, 0 otherwise.
• "systeminitializer!bct_eks_offset" Offset within the BCT where the keyblob/"EKS" is stored.
• "systeminitializer!bct_version_offset" Offset within the BCT where the keyblob version is stored (bootloader0_info.version).
• "systeminitializer!boot_image_update_type" 0 for non-Mariko, 1 otherwise.

"bct_eks_offset" and "bct_version_offset" are only present in non-Mariko config, since (?) Mariko "eks_enabled" is 0. This presumably means the keyblob/"EKS" is not embedded in BCT with Mariko?