I have this firmware on my D7000 , what does A/B means? What happened if I update it, can I find information about it? Do I find it on Nikons website? :
Nikon updates firmware for D600, D800, D4, D3s, D3x, D3, D7000, D3200: Digital Photography Review
Six Reasons to Upgrade your Nikon D7000 to the Nikon D800 - Nikon DSLR Video