Barb, if I could recall I'd go through the same process with the correct BIOS image. Unfortunately the process I went through eludes me. I most likely did a search for Surface Pro BIOS updates and loaded the latest version. According to sites I have visited, you can manually update the BIOS in Pro 3 and Pro 4 units, but not any the precede those models. I guess that's not entirely true but obviously you shouldn't. Not sure why I was able to load a Pro 4 BIOS to begin with. Seems like the loader should have done a simple test before allowing it to happen. My problem now is to figure how to back out of this situation.
Thanks