For me I could not even install Windows 8.1 as a clean install with FY0025 & FY0028. As soon as I tried to create the partition using the installer UI or Diskpart the 530 SSD it would disappear. It would not return until I power cycled.
I've tried every BIOS setting I can think of with no effect, of course I could be missing something. The weird thing is FY0021 works perfectly.
After installing Windows using FY0021 when I try and go back up to FY0028 windows works for about 5 minutes and then freezes and blue screens.
The only last piece I have not tried is the BIOS recovery using the jumper, I'll try that tonight.
That is interesting that yours works fine, If my unit is faulty that's fine, I just need it replaced, Intel support are working it, until then I stay on FY0021. It might be a stepping issue.