See the flashrom manual for more information on how to use flashrom.
We welcome contributions from every human being, corporate entity or club.
If you want to contribute patches or test reports, please send them to our flashrom mailing list. For one-off test reports, you don't have to subscribe, but if you want to contribute patches, we strongly recommend you subscribe to our mailing list to make communication easier.
Flashrom development is volunteer-driven, and our developers tackle the features they're interested in. Most developers have pretty long personal TODO lists, so if you want to suggest a feature, please make sure you have all the datasheets and/or programming guides needed for that feature (preferably without NDA). For testing, our developers usually need physical access to the hardware in question. It also helps to be friendly to the developers.
Some companies and individual developers offer paid flashrom support and development if you desire a particular feature nobody is working on.