Bay Trail UHS Workaround

[smnc]

Hi, I'm new here although I've known about this place for a few years.
So I need some help: the integrated Bay Trail SD controller has a known bug (VLT55) that causes it to have issues with some UHS-1 cards.  
The solution seems to be pretty simple, just kick the controller back down from UHS/DDR50 mode to UHS/SDR25 mode or HS mode.
To the best of my knowledge this is doable in BIOS, but unfortunately Lenovo never issued a fix for this for my Lenovo Yoga Tab 2 10" (851F).
Is this something someone here can do?

Thanks for your time!