Making wifi work again without disabling Secure Boot

[rodna]

My wifi broke after updating Mint. When i try to install the driver it says modprobe: ERROR: could not insert <my wifi card name> Required key not available

So with some research I got it's because of Secure boot (UEFI).

Is there any other way to install this driver? Some guy mentioned signing the driver myself and adding to machine's secure db. I don't wanna do that too it sounds like it may broke other things while correcting Mint's wifi issue. Also there are people saying the method's not working.

Rfkill shows wifi softblocked. When unlock it from Terminal, it become unlocked but no wifi still.

[JeremyB]

See the wireless script link in my signature and post results