Hi Joe, just in case it might help, the latest, 7th October 2019, version of edy555's firmware seems to have cured the "white screen" when performing segmented scanning, I am not sure if this is connected to your problem? Hope you don't hang up your nano for good as I have learnt a lot from your you-tube videos and the posts on this forum, although I admit a fair bit of your later work is above my head. Regards Mike