Firmwares 

European CoolPix 990 Firmware Upgrade 1.1
American Coolpix 990 Firmware Upgrade 1.1
Installer fix for failed installations of Nikon viewer
Nikon Viewer for windows and Mac (upgrade to version 3.11)

Softwares 

ACDSee by ACDSystems.
Exifer by Friedemann Schmidt.
Acrobat Reader by Adobe.

Trip reports