Thiago Okada

Installed the leaked BIOS, it works! My Windows is still activated even if it show "Windows license: INVALID" on BIOS. And there is no watermark after a "Reset Keys" on BIOS.

Well, my desktop is pretty simple:

https://www.dropbox.com/s/2319nk4fuirsqs1/Captura%20de%20tela%202013-10-22%2000.31.33.png

The wallpaper with filename "初音ミク.jpg" is a workaround to a strange bug on Windows (if Chrome is the first application to show non-ASCII characters, all the other applications will not show any of them; so if you put a file with non-ASCII on your desktop the Explorer will be the first application to show them always and the bug will not be triggered). I don't know if they fixed this on Windows 8.1 (this happened on both Windows 7 and 8), maybe I should try to delete it.

Well, and the "nice" text about SecureBoot is thanks to the new way Windows 8.1 manages SecureBoot. F#!"$ Microsoft!

The solution is few posts back: http://forum.techinferno.com/lenovo-ibm/2260-lenovo-y580-y480-unlocked-bios-versions.html#post69650

I can't download this file, can someone please re-upload (or give me a explanation why I can't download this file)?

I don't know, I asked the same question because there were many people in this thread who had problems after installing the unlocked bios ver 8.xx. I think it could be safe to install the unlocked bios ver 8.00 not 8.01. Can someone confirm that?

Maybe would be better to first update to Lenovo 8.00 official, if there is one.

Just for the info, the last firmware for Windows 7 versions (2.07) may trigger a bug where the notebook won't return from suspend (like described here: Y580 Windows 7 won't come out of Sleep FIXED SOLVE... - Lenovo Community). The problem is reported on Windows 7 but I can confirm it happens on Windows 8 and Linux too.

Like said on that thread, you can fix it returning your BIOS to verion 2.06.