: For Exynos-based Samsung devices like the A40, you can use Chimera Tool to remove MDM locks by connecting the device in EUB mode via a test point.
: Third-party utilities like the MDMFix Tool are frequently used in the repair community to bypass KG/MDM locks on newer Samsung firmware. Technical Considerations
: If you have the administrator credentials, you can disable management directly: Go to Settings > Security > Device administrators . Find the MDM/EMM solution and toggle it off. Uninstall the MDM agent app from the Applications menu.
: Ensure any "fix file" or firmware you download matches your U1 binary exactly; using a file for a different binary (like U2 or U3) can hard-brick the device.