on a mac
What version of what software are you trying to update to ACR 8.7?
yes. for my DF
DF means what, and 6.7-7.1 refers to what?
How do I update to 8.7 ? having trouble finding out
Maybe because you're not giving much away.
You're on a Mac, but what version of Creative Suite are you running? And why do you want 8.7 specifically? The latest version is 9.0.
I wrote an article on getting Camera Raw to open your Raw files. Maybe that will help? If not, please get back to us with more detail.
Do you mean Nikon DF? According to Adobe, anything from Camera Raw 8.3 onwards should work. Not much help if you're on CS5 though, for example.