I tried to update my maps/bluetooth. Put the SD in. Didn't read it. Gave up,put my SD back in with my music on it. Now it's showing there is no SD card in there. Any hints?

Was this an SD card you have previously used in your system? What size is the card? Do you have another SD card to try? Reformat the card with FAT32 and try again. The updates file structure should be two folders Firmware and Update and one file Cardinfo.cif and they should be in the Root directory - copied from "2013 USA-CANADA MAP UPDATE" folder on your computer.

Same SD card I've always used. Nothing but music on it. Won't recognize it, period. Worked until I tried to update the maps/Bluetooth. Now sd slot seems dead.