I did the update in my AVIC-Z110bt, The GUI is awesome,if you follow the instructions everithing works fine. However the CNSD-OMM013, Optional Mexico Map (2009), didn't work anymore it said "Wrong Version", and for me is important because I live in México, I don't know if the 2010 version for Z110BT is going to work or I need the Avic-z120bt version of mexico maps. Any help is Welcome.
One question, in the future I have to download the updates for Z120BT or Z110BT?