I thought to share some of my experiences with this problem. On background I had bios version of 35 (if I remember correct shipped with that version or I did update to that version by myself). At first I directly tried to update the easiest way from Windows. This gave me the same error 1527 (exactly same situation as Bobot's case). So I continued with usb stick options (however I was unable to get to F7 update phase, everything just frozes if I pressed the F7 during the startup).
So back to DOS update method and still the same error message 1527 (Intel management engine firmware failed). I was just about to open my chasis to tamper with jumper when I thought why not to restore default settings before trying to update. I restored from BIOS the default values (btw. a bit annoying when computer tries to boot from network), got myself to Windows and then I hit the express method. I could not believe my eyes when everything started to go RIGHT.
So in simple and short: in my case I had to restore default settings BEFORE trying to update BIOS. This worked for me and got update from version 35 to 45. I hope this helps someone.