After a reset, you must re-configure your preferences as all data is wiped.
If the method above didn't work, your specific unit might utilize the "pinhole" reset mechanics often found on these chassis: grundig gx3800 factory reset code fixed
The ghost in the machine wasn't a bug—it was a feature of a time when you truly owned your hardware, warts and all. And now, the code is out. After a reset, you must re-configure your preferences
Technical Support / End Users Date: [Current Date] Subject: Resolution of factory reset code requirement for Grundig GX3800 After a reset