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".
  • The path shown was valid earlier — typically before a rebuild or clean.

Likely causes

  • The build system cleaned or renamed the output (e.g. a clean build removed build/ artifacts).
  • The file lives on a different machine than the SDK — the path must exist on the computer running the SDK, not just in your editor.
  • The project output directory changed (Debug vs Release configuration).

How to fix it

  1. Rebuild the firmware

    Run your build so the .hex/.bin/.elf output exists again at the expected path.

  2. Reselect the file

    Browse to the current build output in MCUHex and select it — check whether your IDE switched between Debug/ and Release/ folders.

  3. Keep SDK and files on the same machine

    The SDK reads the file from its own filesystem. If you build elsewhere, copy the artifact to the SDK host first.

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