BCAT (Background Content Asymmetric synchronized delivery and Transmission) encompasses a set of content download/upload related services.

bcat:a, bcat:m, bcat:u, bcat:s

These are "nn::bcat::detail::ipc::IServiceCreator".

Cmd	Name
0	CreateBcatService
1	CreateDeliveryCacheStorageService
2	CreateDeliveryCacheStorageServiceWithApplicationId
[?-2.3.0] 3
[?-2.3.0] 4

Equivalent to 3DS BOSS(SpotPass). See here for BCAT-content-container.

IBcatService

This is "nn::bcat::detail::ipc::IBcatService".

Cmd	Name
10100	#RequestSyncDeliveryCache
10101	[5.0.0+] RequestSyncDeliveryCacheWithDirectoryName
10200	[5.0.0+] CancelSyncDeliveryCacheRequest
20100	#RequestSyncDeliveryCacheWithApplicationId
20101	[5.0.0+] RequestSyncDeliveryCacheWithApplicationIdAndDirectoryName
20300	[8.0.0+] #GetDeliveryCacheStorageUpdateNotifier
20301	[8.0.0+] #RequestSuspendDeliveryTask
30100	SetPassphrase
[?-2.3.0] 30101
[?-2.3.0] 30102
30200	[3.0.0+] RegisterDeliveryTask
30201	[3.0.0+] UnregisterDeliveryTask
30202	[3.0.0+] BlockDeliveryTask
30203	[3.0.0+] UnblockDeliveryTask
30300	[8.0.0+] RegisterSystemApplicationDeliveryTasks
90100	GetDeliveryTaskList
90200	#GetDeliveryList
90201	[3.0.0+] ClearDeliveryCacheStorage
90202	[8.0.0+] ClearDeliveryTaskSubscriptionStatus
90300	[3.0.0+] GetPushNotificationLog

RequestSyncDeliveryCache

No input/output.

[3.0.0+] Now returns an #IDeliveryCacheProgressService.

RequestSyncDeliveryCacheWithApplicationId

Takes a total of 8-bytes of input, no output.

[3.0.0+] Now takes an additional 8-bytes of input, and returns an #IDeliveryCacheProgressService.

GetDeliveryCacheStorageUpdateNotifier

Takes a total of 8-bytes of input, returns an #INotifierService.

RequestSuspendDeliveryTask

Takes a total of 8-bytes of input, returns an #IDeliveryTaskSuspensionService.

GetDeliveryList

Takes a type-0x6 output buffer, returns a total of 4-bytes of output.

[3.0.0+] Now takes a total of 8-bytes of input, and returns an additional 4-bytes of output.

IDeliveryCacheProgressService

This is "nn::bcat::detail::ipc::IDeliveryCacheProgressService".

Cmd	Name
0	GetEvent
1	GetImpl

IDeliveryCacheStorageService

This is "nn::bcat::detail::ipc::IDeliveryCacheStorageService".

Cmd	Name
0	CreateFileService
1	CreateDirectoryService
10	EnumerateDeliveryCacheDirectory

IDeliveryCacheFileService

This is "nn::bcat::detail::ipc::IDeliveryCacheFileService".

Cmd	Name
0	Open
1	Read
2	GetSize
3	GetDigest

IDeliveryCacheDirectoryService

This is "nn::bcat::detail::ipc::IDeliveryCacheDirectoryService".

Cmd	Name
0	Open
1	Read
2	GetCount

INotifierService

This is "nn::bcat::detail::ipc::INotifierService".

Added with [8.0.0+].

Cmd	Name	Notes
0	GetEvent

IDeliveryTaskSuspensionService

This is "nn::bcat::detail::ipc::IDeliveryTaskSuspensionService".

Added with [8.0.0+].

Cmd	Name	Notes
0	GetEvent

news:a, news:c, news:m, news:p, news:v

These are "nn::news::detail::ipc::IServiceCreator".

Cmd	Name	Notes
0		No input, returns an #INewsService.
1		No input, returns an #INewlyArrivedEventHolder.
2		No input, returns an #INewsDataService.
3		No input, returns an #INewsDatabaseService.
4		No input, returns an #IOverwriteEventHolder.

INewsService

This is "nn::news::detail::ipc::INewsService".

Cmd	Name
10100
20100
30100
30101	[3.0.0+]
30110	[6.0.0+]
30200
30201	[8.0.0+]
30300
30400	[3.0.0+]
30500	[8.0.0+] ? (Takes a total of 8-bytes of input, a handle, and a type-0x9 input buffer, returns an #IUnknown2)
40100
40101	[3.0.0+]
40200
40201
90100

INewlyArrivedEventHolder

This is "nn::news::detail::ipc::INewlyArrivedEventHolder".

Cmd	Name
0

INewsDataService

This is "nn::news::detail::ipc::INewsDataService".

Cmd	Name
0
1
2
3
1001	[6.0.0+]

INewsDatabaseService

This is "nn::news::detail::ipc::INewsDatabaseService".

Cmd	Name
0
1
2
3
4
5
1000	[6.0.0+]

IOverwriteEventHolder

This is "nn::news::detail::ipc::IOverwriteEventHolder".

Cmd	Name
0

IUnknown2

This was added with [8.0.0+].

Cmd	Name
0
1
2
3

prepo:a, prepo:a2, prepo:m, prepo:u, prepo:s

These are "nn::prepo::detail::ipc::IPrepoService".

Cmd	Name
10100	SaveReportOld ([1.0.0-5.1.0] SaveReport)
10101	SaveReportWithUserOld ([1.0.0-5.1.0] SaveReportWithUser)
10102	[6.0.0+] SaveReport
10103	[6.0.0+] SaveReportWithUser
10200	RequestImmediateTransmission
10300	GetTransmissionStatus
20100	SaveSystemReport
20101	SaveSystemReportWithUser
20200	[4.0.0+] SetOperationMode
30100	ClearStorage
30200	[6.0.0+] ClearStatistics
30300	[6.0.0+] GetStorageUsage
30400	[6.0.0+] GetStatistics
30401	[6.0.0+] GetThroughputHistory
30500	[6.0.0+] GetLastUploadError
40100	IsUserAgreementCheckEnabled
40101	SetUserAgreementCheckEnabled
90100	[6.0.0+] ReadAllReportFiles ([1.0.0-5.1.0] GetStorageUsage)
[5.0.0-5.1.0] 90200
[5.0.0-5.1.0] 90201
[5.0.0-5.1.0] 90300

Data reporting

The "Play Report" (prepo) service uploads system and user information to a cloud server. This includes the following fields:

sys_info
data
application_id
event_id
operation_mode
lc_recorded_at (followed by a timestamp)
nc_recorded_at (followed by a timestamp)
nsa_id
os_version

And the contents of the following file:

is_user_agreement_check_enabled.bin

All the information is periodically uploaded to the following URL:

https://receive-%.dg.srv.nintendo.net/post

It also checks the validity of the device's authentication token using the following URL:

https://dauth-%.ndas.srv.nintendo.net/v1/device_auth_token

BCAT services

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