I belive the latest is 1.17, that what I upgraded all my cameras to. You will have to get someone from Sony (see previous post in this tread) to send you a workable download of this firmware. The Sony site containing a “downloadable” link to new firmware does not work. No too many noticable changes by making the upgrade. I only updated firmware to get fewer “media error / restore media” card errors when shooting. I only use SD cards, not Sony SXS cards. So far so good.