Do you still have the box and is the ESC in good condition, are the stickers still on it?
On the box and on the side of the ESC you will see "Spread Spectrum Optimized" sticker. Can't miss it, cover the entire side of the ESC.
You could also check through the set up: -
LiPo Safety Cut off.: -
During Profile customisation, press and hold the one touch set up button until the red and yellow LEDs turn on Simultaneously. One blink signifies saftey cut off function is off. Two blinks, and it's on.
When you turn the ESC on, Red and Yellow LED's blink 3 times to show that it's activated.
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