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  4. Why are some camera thumbnails in the i-PRO Mobile App black or showing an "!"? What can I do to resolve this?

Why are some camera thumbnails in the i-PRO Mobile App black or showing an "!"? What can I do to resolve this?

  • Network Recorders
  • Troubleshooting

The following cases may have occurred.

The following cases may have occurred.
• The camera may have been disconnected from the network. Connect the camera to the network.
• The power of the camera may have been shut down. Supply the power to the camera.
• "Camera Directly" has been selected for "Camera Live Setting" on the application. Select "Through Recorder" for "Camera Live Setting" or configure the settings to use "Camera Directly".
• If you specify a network recorder for device registration, the resolution of camera thumbnails is limited.
Please set the Full HD (1920x1080) equivalent size or less to the JPEG (1) resolution of the camera live setting. If you use 360-degree camera, this application can display up to 1280x1280.
• Check the following i-PRO recorder firmware version.
- WJ-NU101(Version 1.00 or later)
- WJ-NU201(Version 1.00 or later)
- WJ-NU300(Version 1.00 or later)
- WJ-NU301(Version 1.00 or later)
- WJ-NX200 (Version 1.02 or later)
- WJ-NX300 (Version 1.00 or later)
- WJ-NX310 (Version 1.00 or later)
- WJ-NX400 (Version 1.02 or later)
- WJ-NX410 (Version 1.00 or later)
- WJ-NX510 (Version 1.00 or later)
- WJ-NV200 (Version 1.50 or later)
- WJ-NV300 (Version 1.03 or later)
- WJ-ND400 (Version 3.40 or later)
- WJ-HD616K/HD716K (Version 2.6 or later)

Article number:us-en123956

Last updated:June 16, 2025

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