I received my brand new overo fire with the LCD and chestnut43.

I updated the MLO and ran overo-nand-desktop.. 

copied the new image on a sd card following the gumstix procedure and I cannot see anything on the screen nor the console (not even uboot only erratic characters).  On the usb console I can see something but the speed seems to be incorrect.

if I remove the sd card, the console works fine and the default image boots (the screen is OK (but resolution is not quite good) but the touchpad seems not calibrated).

How can I debug this ?  Is there any advice you can give me ?

Thank you!