So I've spent hours reading through all these posts. I just downloaded the 2013 maps from the link above. I then formatted a 16GB Kingston MicroSD card and unzipped the folder directly to the SD card using 7-Zip. Then I followed the instructions on the first post, replacing the two files that were linked. My model is the x920bt. After booting up the unit, it asked if I wanted to proceed with update, so I clicked 'yes.' Then it starts giving me the Incorrect SD card message. Would not start the update, will not proceed with it. I have reformatted my SD card several times, and unzipped t
