: Accessing certain settings, including video display and deep system menus, often requires the wired connection to the parking brake to be active (the brake must be set). Manual Reboot
The unit will force-restart, which can often resolve connectivity issues with CarPlay or Bluetooth. grundig gx-3800 factory reset code
Related search suggestions (you may use these queries to look up more info) : Accessing certain settings, including video display and
How to find your for a code lookup. Instructions for firmware updates via USB. : Accessing certain settings
If the screen is frozen or black, a hard reset is necessary: