overkillrc.comoverkillrc.com/iT4/First Look/FS-iT4-2.pdfFS-iT4 emulator USB function Fly Sky Version...
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overkillrc.comoverkillrc.com/iT4/First Look/FS-iT4-2.pdfFS-iT4 emulator USB function Fly Sky Version About FS-iT4 Firmware update mode entered. All functions stopped. Remove the battery