I don't know how many folks are using a 32GB SDHC card with their SmartQ device but I thought I would give one a try.... (I can't resist pushing the Q7 to its limits.)
Using the 32GB card to upgrade the Q7 to the v4 firmware works fine. It also builds the soft.img file without a problem.
However, I couldn't get it to load my custom desktop background.
I found the solution here:
http://ubuntuforums.org/showthread.php?t=835678.
Apparently, the problem is a speed issue and it may be related to the amount of time it takes the Q7 to search through the 32GB SDHC card to find files. It's a Class 6 card though....
What are other people's experiences?