What is flashing, and how is it used with firmware?

While most users or people with non-technical backgrounds may perceive firmware as permanent, as a firmware engineer, you know that some types of firmware can be updated or flashed. Being able to describe this and the benefits of flashing will help you validate your qualifications as a Tesla firmware engineer and demonstrate to the interviewer that you are fit for this role. Since this is a technical question, make sure to keep your answers brief and to the point, using non-technical, simple-to-understand language.