docs: sync from 30ea38ca87a83552469c70d943d79345161af3f8
docs: sync from e6283fddaac92a7dfc70aab569861ca8a8b48a35
docs: sync from 70847417bc4f5bfb790a07a672fcb397c27ef4e3
docs: sync from 06edcc677c82ff4559e65bfc69ed808eb0e1f2d0
Document firmware release downloads
Restructure documentation guides