Solution to The Issue of LAUNCH X431 Tablet Unlocking App Being Blocked

When updating your Launch X431 series tablet, sometimes it may display 'Unsafe app blocked':

How to deal with this situation? Combined with possible system restrictions or permission settings, the following comprehensive solutions are provided:

Here takes X-431 PRO3S+ as an example:

Tap “More details” and then “Install anyway”

Don’t tap “Got it”

Then the app will be installed automatically.

Wait the app is installed.

Once the app is successfully installed, it will be ready.

If the above method does not work, you can try referring to the following solutions:

1. Check system permissions and security settings

Application lock or restriction mode: If the tablet has enabled a feature similar to "application lock", you need to enter the "Security and Privacy" or "Application Management" interface in the system settings and turn off the relevant restrictions.



2. Use ADB tools to enable blocked applications

If the tablet has enabled USB debugging mode, blocked apps can be forcibly enabled through ADB commands.



3. Modify the launcher or system configuration

Replace launcher: If the original launcher restricts application display, you can try installing a third-party launcher to access the blocked app through the new launcher.

File Manager Access: Use tools such as ES File Manager to enter the/data/app or/sdcard/Android/data directory and manually launch the APK file of the app.



4. Reset the device or restore factory settings

If the above methods are ineffective, you can try the following operations:

Reset application preferences: Go to "Application Management" in the system settings, select "Reset Application Preferences", and restore the default configuration.

Restore factory settings: After backing up data, enter "recovery mode" and select "restore factory settings". Attention: This operation will clear all data, please proceed with caution.



5. Specific operations for X431 diagnostic tool

If the problem is related to the X431 diagnostic tool itself (such as firewall restrictions):

Disable Diagnostic Firewall: Refer to the operating manual of X431 device, enter the diagnostic system menu, and disable the "Diagnostic Firewall" function. After connecting to the vehicle, unlock the control unit permissions through the "SFD token" in the tool.

Firmware update: Visit official channels to download the latest firmware and refresh the system to remove potential restrictions.