The sun server only has one function: providing the latest system update version. If the Switch detects that a system update is available, it downloads the system update from the atumn server.
The sun server only accepts requests with a valid device certificate.
| Header | Description | 
|---|
| Host | sun.hac.lp1.d4c.nintendo.net | 
| User-Agent | User agent | 
| Accept | application/json | 
User Agents
The user agent looks as follows: NintendoSDK Firmware/<firmware version>-<revision> (platform:NX; did:<device id>; eid:lp1). The firmware version and revision number are obtained from the system version title.
Here is an example: NintendoSDK Firmware/15.0.0-4.0 (platform:NX; did:6265ca40780b1c0d; eid:lp1)
Methods
| Param | Description | 
|---|
| device_id | Device id | 
Response on success:
| Field | Description | 
|---|
| timestamp | Time at which metadata was updated (this happens once every 4 or 5 minutes) | 
| system_update_metas | Array (see below) | 
The system_update_metas array has exactly one entry, with the following fields:
| Field | Description | 
|---|
| title_id | Latest system update title id | 
| title_version | Latest system update title version | 
Example:
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 | GET /v1/system_update_meta?device_id=6265ca40780b1c0d HTTP/1.1
Host: sun.hac.lp1.d4c.nintendo.net
User-Agent: NintendoSDK Firmware/17.0.0-6.0 (platform:NX; did:6265ca40780b1c0d; eid:lp1)
Accept: application/json
 | 
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 | HTTP/1.1 200 OK
Content-Type: application/json
Server: Apache
Content-Length: 107
Date: Sat, 21 Oct 2023 20:36:08 GMT
x-nintendo-akamai-reference-id: 0.902e0388.1697920568.236fe13
Connection: keep-alive
{"timestamp":1697920335,"system_update_metas":[{"title_id":"0100000000000816","title_version":1140851708}]}
 | 
Errors
On error, the server sends the following response:
| Field | Description | 
|---|
| error | Error info (see below) | 
The error info has the following fields:
| Field | Description | 
|---|
| code | Error code | 
| message | Error message | 
Known Errors
| Status | Code | Message | 
|---|
| 404 | 000-5700 | Not Found |