This repository contains magic definitions for filetypes commonly found in firmwares. This is a fork of fact_helper_file and deletes all the code and just keeps the magic definitions (despite custom_mime_internal). Thus this repository is also licensed under the GPLv3.
Run make to create a compiled mime database firmware.mgc.
Alternatively you can head over to the releases and download the
compiled database from there.
For example you can put this in the directory shown by file -v to make use of
it when using the standart unix file tool.