[Windows 10][ZED SDK 5.0.1RC] NEURAL Depth Mode Fails — AI Model Download Error / CORRUPTED SDK INSTALLATION

Software Python
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I’m experiencing an issue when trying to initialize NEURAL depth mode using the ZED SDK. It appears the SDK cannot download the required AI model, and then reports that the model is corrupted. Here’s the relevant portion of the log:

[2025-06-12 12:26:43 UTC][ZED][INFO] Logging level INFO
[2025-06-12 12:26:44 UTC][ZED][INFO] Using USB input... Switched to default resolution HD720
[2025-06-12 12:26:44 UTC][ZED][INFO] [Init]  Depth mode: NEURAL
[2025-06-12 12:26:45 UTC][ZED][INFO] [Init]  Camera successfully opened.
[2025-06-12 12:26:45 UTC][ZED][INFO] [Init]  Camera FW version: 1523
[2025-06-12 12:26:45 UTC][ZED][INFO] [Init]  Video mode: HD720@30
[2025-06-12 12:26:45 UTC][ZED][INFO] [Init]  Serial Number: S/N *********
[2025-06-12 12:26:45 UTC][ZED][INFO] AI model not found, downloading
[2025-06-12 12:26:47 UTC][ZED][ERROR] File downloading failed, NETWORK_FAILED: The file couldn't be downloaded.
[2025-06-12 12:26:47 UTC][ZED][INFO] AI model not found, downloading
[2025-06-12 12:26:47 UTC][ZED][ERROR] File downloading failed, NETWORK_FAILED: The file couldn't be downloaded.
[2025-06-12 12:26:47 UTC][ZED][ERROR] Model download error
[2025-06-12 12:26:47 UTC][ZED][ERROR] [Object Detection]  Object detection model is corrupted or unreadable
[2025-06-12 12:26:47 UTC][ZED][ERROR] [ZED] [Depth]  NEURAL CORRUPTED MODEL
[2025-06-12 12:26:47 UTC][ZED][WARNING] CORRUPTED SDK INSTALLATION in enum sl::ERROR_CODE __cdecl sl::Camera::open(struct sl::InitParameters)

System Setup:

  • Operating System: Windows 10 (64-bit)
  • Python version: 3.10
  • ZED SDK version: 5.0.1RC
  • CUDA version: 12.9

:small_blue_diamond: Observations:

  • The camera connects successfully.
  • The SDK attempts to download the AI model for NEURAL depth.
  • The download fails with a NETWORK_FAILED error.
  • After two attempts, it reports the model is corrupted or unreadable.

:small_blue_diamond: Steps I Have Tried:

  • Verified internet connectivity and DNS resolution.
  • Temporarily disabled firewall and antivirus.
  • Ensured the SDK has permission to access external servers.
  • Reinstalled the ZED SDK (5.0.1RC).
  • Restarted the machine and retried in a clean environment

:small_blue_diamond: Questions:

  1. Where exactly does the ZED SDK download the AI model from? Is there a way to manually fetch and install it?
  2. Could this error be caused by a proxy or firewall blocking the model server?
  3. Is there a fallback way to supply the model locally to avoid download attempts?
2

Hi,

You can manually download the models. Please refer to this answer for the links:

There’s also a Python script that puts it directly in the correct location

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