u/Hmhmhmhmmmm — reddlx

Hello, I’m hitting a wall trying to enable ADB/Developer Options on my XTRONS PX7 head unit (Android 14). I need ADB access to debloat the system (UAD-ng) since there's lots of "trash" pre-installed.

The Current State:

Build Number: Grayed out and non-interactive in Settings.
Backdoors: There is no stock Calculator app, and the Bluetooth Dialer codes (like *#*#3646633#*#*) auto-delete without launching any menus.
Google Account: I am logged in, but there are no "Device Admin" apps or "Work Profiles" active.
Launchers: Activity Launcher/Shortcut Maker find the DevelopmentSettings activity, but it fails to launch with a "Not enabled yet" message.

What I’ve achieved so far:

Accessed a hidden "Debug Setting" menu using code 0000122 in Factory Settings. Tried 0000 but neither of these menus have a clear ADB toggle.
I toggled "Allow Debug" and "Activity Debug" to ON.
Despite these toggles and a reboot, the adb connect [IP]:5555 command is "Actively Refused" by the target machine.
Terminal Emulator: Attempting to setprop or start adbd locally fails with "Must be root" or "Permission Denied."

The Hardware:

Unit: XTRONS PX7 platform.
OS: Android 14.
MCU: (If you have this version number from your 'About' screen, paste it here).

Question: Has anyone encountered this specific firmware lock? Is there a second code or a specific file (like adbon.txt or a factory_config.xml) I need to put on a USB stick to force the ADB daemon to start?

I’m trying to avoid a full firmware flash if possible.

Thank you in advance!