I ended up being able to downgrade my WH16NS60. Thank you so very much for posting these instructions and for all the work that you have put into it. I’m not sure what was going wrong with my previous attempts, but what I did this time that worked was to install a fresh copy of 32 bit Windows 7 Home onto a spare hard drive, and didn’t do any updates (in fact I never even connected it to the internet). Then when I went through the steps at the start of this thread I was able to downgrade my BIOS from 1.01 to 1.00 in about 5 minutes. I wish I would have just done this before rather than messing around with Windows 10, then a Windows 8 computer I have running Windows Media Center, and then the Rufus USB boot drive - none of those worked for me. Total time including installing Windows 7 was about 30 minutes - Versus the 4 hours I wasted on it previously trying it the other ways, heh. Thanks again, czary2mary.