This update was not recognized by my z110 unit.
So I pulled the CARDINFO file from the 2013 map update and replaced the 2015 file.
Inserted SD card, and the update was recognized.
Let it finished, and updated Bluetooth, although the versions were the same.
Afterwards, everything worked except my Bluetooth connection.
My iphone 6 would connect, but I could not stream any audio to the z110.
I had to reinstall the 2013 update.