My 2014 Nissan no longer recognizes my iphone 5s via lightening cable. Worked flawlessly before updating to 8.4. Any suggestions?

Unfortunately that's most likely an issue with the stereo - it probably needs to be updated to work with 8.4. If you haven't, try another lightning cable. If that doesn't help, then contact a Nissan dealer and see if they can help.

~Lyssa

since I upgraded to 8.4 I have had a few ocassions where I had to unplug my cord from the USB port in my Hyundai and reinsert it for it to work again.