Traduciendo paso 2
Using a hairdryer or heat gun, heat up the lens for removal. This should not take longer than 30 seconds.
Now using a suction cup, I used a suction from a sponge,apply the suction cup to the plastic lens. Now just pull the lens away from the camera to remove the old lens. This may require a small amount of force.
If it does not want to budge, try reheating.