KK 2.1.5 How to Start?

hi my client recomnded me to get KK 2.1.5 to build quadcopter ordered one off ebay as i hate HobyKing as last time they missed parts in my order. Well got bare board and do not know what to do with it? I plyged in 6V in battery pins nothing happens.

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Settings not being saved, automatic dissarming in 2-3 min

hi all lets start that i'm newbie  to this (but with 15+ years of aerospace electronic design... which makes my situation not that good :)

So ive build quad with ADP2.5, all OK,

problem #1 radio calibration seams to be reset when i unplug the buttery,

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