It works! I have spent most of the day testing and flying after updating the software last night, thanks to the help from the group. Good height (800'), good range >300m, come home function works with 8knot crosswind, and 3 full battery cycles without a hitch. This is now the device I paid for. Hopefully below is my last photo of the day - just about to put both my 'copters to bed Thanks for the help, and if you haven't quite managed it, it works well when its done.