Can't we write frequently?

1. Write frequency errors and abnormal installation software in writing frequency causes to be unable to write frequency;

2. Computer USB port or COM port abnormal causes to be unable to write frequency;

3. Writing frequency process is suffered from strong power RF signal interference, which will lead to unsuccessful writing frequency;

4. The headset interface is broken;

5. Write frequency plug -in wear and poor line contact;

6. Machine circuit failure.