There are multiple sources for DX6i programming on the internet that got me crossed up with the Arming using the Flap switch. When I finally got a breakthru I created this vid to go through all the DX6i menus to show my setup. There may be places to finetune, but these got me flying hope it helps.
For Selecting Flight modes:    • Inductrix FPV+ (Plus)  flight modes ...