I think you've already started the process yourself; reaching out to the wider Yuneec community. You might consider "trolling" through the Internet looking for non-franchised Yuneec dealers, contacting them individually on the off chance somewhere, someone might have a spare main board gathering dust on a back shelf. Buying a complete H920 (that hasn't been crashed) which is surplus to requirements and being disposed of as a fully functional unit may be you only other option.
Open the web page, then right click in a blank space along the top ribbon area. A small window should open that will give the choice to translate to English - if you are using Google Chrome. This option might depend on your 'Settings' though.Hi l am sorry but l do not speak German by l am very interested in this 920 plus. I would like to get more information on this aircraft but in English if at all possible.Has it been crashed or damaged in any way, if not what is the reason why you are selling it?