Lenovo E520 hidden advanced options

[Noric]

Hello,
I would like to ask you if the hidden advanced options for the Lenovo Thinkpad Edge E520 bios can be unlocked, as already done for other Lenovo Sandy Bridge T/W/X series laptops.
Here is the latest E520 bios: https://support.lenovo.com/us/en/downloads/ds014906

And here is an example of successful unlock by @sovem: https://www.bios-mods.com/forum/Thread-R...8#pid95548
and another one by @ValdikSS: https://www.bios-mods.com/forum/Thread-R...#pid141098

Thanks!