Had another go with 8410 with very strange consequences.Renamed directory to CustomData (no spaces).
When you load SD, it goes into a reload loop that you cannot get out of.
Furthermore the 3 files are gone and replaced by a file that you cannot delete. Only way then is to rename CustomData folder to something else. Then SD works agian but no custom data of course.
Only way to get back completely to square 1 is to reformat the card and start installation from scratch.
So other 8410 users beware.
I shd say it works perfectly on Cheapo Chines 7"!!
D