In addition to standard settings that you can change, there are also hidden settings, note here you can adjust a lot, but incorrect settings can also crash the device, therefore these settings are hidden, and should only be used after instructions you have from us got.
If you are technical and understand what you are changing then you can use it, see video for instructions.
If you bought the car radio after March 2022, the code is 8878 and not 8888.