Step1 Open the front case by removing the 4 screws from the back of the radio.
Step2 Cut the root of the current antenna cover carefully so the antenna cover can be easily pulled out. Be sure not to damage anything else.
Step3 Reinstall the front case with both buttons by screwing the 4 screws back in. Push the new antenna cover all the way down.
Step4 Bend the root of the antenna left, right, front and back once each direction slowly, at about 80 degrees. This operation is to prevent the snap of antenna cover under impact.