If you see a yellow warning screen stating the system is running in "Manufacturing Mode," press Alt + F to exit this mode, or enter your Service Tag into the BIOS prompt to lock the settings securely.
Power on the laptop. The first boot after a BIOS flash may take a minute. Troubleshooting & Safety Notes dell latitude 3420 bios bin file patched
Repaired the Intel ME (Management Engine) firmware region utilizing pure data from official Dell repository extraction. If you see a yellow warning screen stating