APM 2.5 won't arm!

The problem that I had before is sorted. Although now I'm stuck again.I've managed to manually calibrate the ESC's, although now this issue is that I can't arm the APM, the red light flashes, I push the throttle down and to the left, hold it there for over 4 seconds and nothing.However, if I push the throttle up and to the right the red light turns solid, I've reversed the throttle on the TX but it still arms in the same way.Once the red light stays solid and I move the throttle, nothing happens.Thank you

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  • why now my copter does not want arm? whereas before had been able to fly? prearm checking disabled.. thanks

  • Cheers Chris, I'm managed to arm the APM now after the suggestions you made. Unfortunately, during its initial test flight ones of the props flew off and took out another prop. Only small setback for the time being, as it didn't lift more than an inch off the ground. I'll just have to order some more and make sure they're on much tighter next time.

    Thanks for the help!

  • I've managed to get the APM to arm, but when I push the throttle up the motors aren't spinning... any suggestions?

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