Dell Inspiron 14R 5420 UEFI

Hi,

I have a Dell Inspiron 14R 5420 UEFI Phoenix SecureCore Tiano. Is it possible to unlock the UEFI from this notebook?

I have installed the A19 BIOS from Dell support site.
http://downloads.dell.com/FOLDER01731196...20_A19.exe

Thanks

Fernando Hara