I've just noticed something odd. When I plug my PC usb keyboard into the UBox, certain keys do not work in apps (eg. Google Play or default web browser) which would normally use the built in android virtual keyboard. eg. letters 'R' and 'T'.
I've tried another USB keyboard, and a friend with a brand new Ubox confirms the same symptoms.
My Ubox is currently configured for English (US) for language and keyboard. (Build ....KOT49H20160127)
The USB keyboard works fine within KODI but this does not use the stock android virtual keyboard.