This video tutorial shows the step by step of how to access the radio display hidden menu.
Accessing hidden menu will help to find out many data about your audio unit such as software versions, rest to factory default setting if there's any errors on your audio unit.
camera setting and so much to do. change any setting carefully.
Highly advice write down or take a photo how was the settings was before doing any changes.
hope this video helps.
![](https://i.ytimg.com/vi/z91FEpPNAoU/maxresdefault.jpg)