Scrum is just one method of Agile development, which does not really work verbatim when it comes to physical product because physical product has a tooling release, a production release, and hard deadlines that don’t exist like they do in software that can be re-written and updated every 2 weeks.
The useful parts of the process which are applicable to ID are the core values of rapid prototyping, user testing, and iteration as a way to develop your best product faster. Which based on your model really looks more like:
Brief->Research->Concept->Research->Concept->Research->Development->Research->Manufacturing->Research
The other part of importance in this model is including engineering and product folks at every step of the discussion, to help inform what is feasible and desired by the market. This aspect tends to be left out in the ID world early in the process simply because most engineers are over-resourced on production projects and don’t always have time for lots of concept activities - especially on smaller teams and companies. Large tech companies on the other hand invest tons of engineering early on to de-risk these technologies, sometimes spending years before something sees market. A great example is Apple’s acquisition of Primesense - that acquisition happened in 2013, but the tech which powers the Face ID scanner didn’t see the light of day til 2017 in the iPhone X.