What this means
The service-discovery request returned an unexpected HTTP status.
For 25xxx codes, the last three digits normally correspond to an HTTP status returned during Nintendo Wi-Fi service discovery. This is a service-discovery/authentication layer code, not a Hatena page's own HTTP response.
Useful context
For 25xxx codes, the last three digits can reflect an HTTP status from the old service-location stage.
What to try
- Retry once after restarting Flipnote Studio. A one-off failure can be temporary.
- If the DSi connection test succeeds, avoid changing unrelated Wi-Fi settings.
- If the same code keeps returning, contact RexiMemo support and include the complete code and the action that triggered it.