Kk2.1.5 flip on take off/how to fix kk2.1.5 flip problem

Hi everybody this vedio about is how fix flip on take off on kk2.1.5/ how to make kk2.1.5 drone more stable /how set receiver test value on kk2.1.5/how to make receiver test value 00 using trim switch on fs i6 transmitter / how to set up fs i6 for kk2.1.5 flight controller /kk2.1.5 motor not spinning on same rpm / how to fix motor not spinning on same rpm on kk2.1.5/ how to fix kk2.1.5 stable probelm

[@SALYANILEGEND]

Nice video

[@SAAJITH-NM]

My hexacopter is not take off why brother can you explain
All 6 motors are rotating

[@rameshavenger7325]

Same problem

[@manRai-mv8em]

Nice video