File not found

The selected firmware file does not exist on the SDK host.

FLASH_FILE_NOT_FOUND

Symptoms

  • Flashing fails immediately with "file not found", though the image was accepted.
  • The same image flashed successfully before the SDK or its packs were updated.

Likely causes

  • A CMSIS device support pack the target needs was removed or only partly downloaded.
  • The SDK’s cache directory was cleaned while it was running.
  • The file was deleted between being picked and being read — a clean build landing mid-flash.

How to fix it

  1. Reinstall the device pack

    Reopen the chip step and let MCUHex download the pack for your target again, then retry the flash.

  2. Restart the SDK

    A restart rebuilds the cache paths it resolved at startup, which fixes a cache cleaned underneath it.

  3. Re-pick the firmware after a rebuild

    If your build ran while the flash was starting, wait for it to finish and select the fresh artifact.

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