Nikon Coolpix S9400/S9500 Firmware Update Ver. 1.1 June 25, 2014 By Eric Reagan Nikon has issued a firmware update for the Coolpix S9400 and S9500. The firmware version 1.1 for both models resolves a problem with the audio and video sync while recording videos. You can download the update for the S9500 here on Nikon’s website. You can download the update for the S9400 here on Nikon’s website.