@MK_1981 Links to mgadiag in this post. In case it is not obvious, run mgadiag in Win7, not Win10 Yes, I searched the bios mod threads here and found nothing clearly helpful regarding enabling slic on thinkpad x280. Maybe there is still hope.
@MK_1981 Yes, as long as your antivirus don't mess with SppExtComObjHook.dll. Everything will be automated and seamless, thanks to @abbodi1406 and other contributors. Once @quid comes back, I hope we can get more info regarding the SSP2 binary.
Some Chinese site back in the day had a v5.02(maybe v5.03?) version of the DOS tool and I think there were Windows versions (x86/x64) on some other Chinese site too. No idea where you'd get those these days as that was about ten years ago.