I am trying to download a firmware update for my nikond850 camera but the download is in a zipped bin file and my computer cannot open it?
This is from Nikon Support,
Note: For more detailed instructions or information on the equipment needed to complete the update, download the following pdf file:
DSLR_Firmup_Mac_En.pdf (PDF) (0.17 MB)
Note: Updates can be performed for you by a Nikon-authorized service representative.
Here is the link to the Nikon Download Center with firmware for other model Nikons and complete details on what the firmware fixes and added features they may contain.
https://downloadcenter.nikonimglib.com/en/products/359/D850.html
I hope this helps.
You need to download the Mac version which is a .dmg file!