hi. i have a z110 upgraded to z120.

can anyone tell me wut is meant by making sure the AVICZ110 file is located at the 'top layer' of the sd card means?

i have totally formatted 2 sd's and placed only the unzipped 'AVICZ110' file on both sd's and my unit has not reacted to either.

the directions say to simply mount the sd and the update should begin automatically, nothin...

???

The top layer is referencing the root folder of the drive. So the top layer of your C: Drive would be.... "C:\"... that's it... So copy that folder, double click on your SD card drive letter in 'my computer', and paste the folder. Make sure you format the drive in FAT32. If it is not, it will not work. The directions are correct, if you copy it correctly, the update will start automatically as soon as you insert the SD card.

Step by step instructions:

http://avic411.com/index.php?/topic/29198-step-by-step-update-from-z110bt-to-z120bt/