Feb 2019 UPDATE: We are now selling the "red button" Banggood KK2.1.5 clone boards since HobbyKing discontinued the ever popular KK2.1.5. These boards are pre-flashed with the KK-Mini V1.6 OpenAeroVTOL firmware which has been found to work best on the clone boards. See the RCGroups thread linked below for more info. These boards are PRE-F
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Arrived in good condition in a timely manner. I haven’t installed it yet.