hmm, I'll try to help NICELY, rudely doesn't help him fix his problem, now, back to you,

if it only throttles up fully, you may be in 3D mode, flip that switch and try again

if it does not initialize, then, you may not be at throttle off

the connector for the RX may not be in the right place (gyro wires seem to look similar) and/or may be put in wrong way, I've had that happen before

you may (probably not) have screwed and fried the ESC, try sending it back and getting a new one, this is last resort, try other steps first

post a picture of your RX and the servo connectors, that may help us help you