> For the complete documentation index, see [llms.txt](https://help.security.gallagher.com/knowledge-hub/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.security.gallagher.com/knowledge-hub/products/integrations/third-party-readers/idemia-morpho/troubleshoot/idemia-mbtb-invalid-binary-file.md).

# MBTB reports "Invalid Binary File"

Resolve MBTB firmware upgrade errors caused by an unsupported or outdated MBTB version.

The errors **"Invalid Binary File"** or **"Failed to upgrade... MBTB Version is too old"** are seen on **v8.20** during a firmware upgrade.

| Error content       | Description                                                                                   |
| ------------------- | --------------------------------------------------------------------------------------------- |
| Invalid Binary File | Failed to upgrade Morpho reader firmware. The MBTB Version is too old. Found on version v8.20 |

### Resolution

The fix is to upgrade to the latest MBTB.

For a related enforced-secure firmware issue (the 11-10-2022 firmware release connection issues), see [IDEMIA reader cannot connect after the October 2022 firmware update](/knowledge-hub/products/integrations/third-party-readers/idemia-morpho/troubleshoot/idemia-morpho-firmware-11-10-2022-release-connection-issues.md).


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