Devices with no available firmware updates: 
 • TPM
 • UEFI Device Firmware
 • UEFI Device Firmware
╔══════════════════════════════════════════════════════════════════════════════╗
║ Upgrade System Firmware from 1.24.2 to 1.34.2?                               ║
╠══════════════════════════════════════════════════════════════════════════════╣
║ This stable release fixes the following issues:                              ║
║                                                                              ║
║ • This release contains security updates as disclosed in the Dell            ║
║ Security Advisory.                                                           ║
║ • Fixed the issue where the system cannot detect the SmartCard in the        ║
║ Preboot Execution Environment (PXE).                                         ║
║ • Fixed the issue where the system turns on automatically.                   ║
║ • Fixed the issue where the system stops responding when you turn it         ║
║ on.This issue occurs after you enable the Intel Trusted Execution            ║
║ Technology (TXT) and Secure Boot options in the BIOS Setup.                  ║
║                                                                              ║
║ Latitude 7420 must remain plugged into a power source for the duration of    ║
║ the update to avoid damage.                                                  ║
╚══════════════════════════════════════════════════════════════════════════════╝
Perform operation? [Y|n]: 
Decompressing…           [                                       ] Less than one minute remaining…
Secure boot is enabled, but shim isn't installed to EFI/ubuntu/shimx64.efi