12-29-2017 10:26 PM
My Lenovo W541 (System Model 20EGS01S00) is currently on BIOS Version GNET84WW (2.32 ), 9/18/2017. Today I was notifed by Lenovo Sytem Update that there is a more recent BIOS GNET85WW. So I went ahead and installed the BIOS. Nothing actually seems to have happened, and post reboot (I tried this a few times now) the BIOS version remains at GNET84WW. The Winuptp.log file says:
OS = Windows 10 64bit
System BIOS Version -> GNET84WW
Applying BIOS Version -> GNET85WW
System EC Version -> GMHT29WW
Applying EC Version -> GMHT29WW
AC adapter/Battery check....OK.
BIOS Flashing....BIOS Flash completed.
But as I mentioned above nothing really has happened. On reboot there is none of the usual screen which is displayed when the BIOS is actually flashed. What might be happening here?
Solved! Go to Solution.
12-30-2017 12:27 AM
I don't have a W541 myself, but if you go into the W541's UEFI/BIOS firmware and check the version number in there, what does it say?
12-30-2017 12:12 PM
12-30-2017 12:35 PM
06-06-2019 03:17 PM
I actually have the same issue. W541 laptop won't update bios via windows.exe provided even though it displays it's successful. It still displays as version 2.36 in the bios and in windows. The ISO provided is unusable in my case. I can't extract anything of note via 7zip or Winrar. Installing the bios via the provided exe so it extracts the files is the only option since the ISO is apparently corrupt. Flash files are in a weird format for GNET90WW s01e2000.fl1 and fl2. I've attempted using rufus, iso to usb, winiso, isobuster, and universal usb. I've even attempted to burn the ISO to CD and DVD. Why is this so archaic? I haven't used CD's since the mid 2000's even in work environments.
Anyways I'm attempting to fix an issue with this laptop whereby plugging it into the wall or via battery after it's shut down results in no post. The power button flashes as if in sleep/hibernate. This is apparently a known issue (probably Intel's fault in some way) and an update to the 2.38 bios allegedly fixes. The impasse right now is that the 2.38 bios doesn't work (windows executable) and the ISO is corrupt or unusable by modern standards.