[coreboot] Back to original BIOS

Zoran Stojsavljevic zoran.stojsavljevic at gmail.com
Thu Feb 2 20:50:18 CET 2017


> I think that will be a problem. Lenovo BIOSes save some machine-specific
> information in the flash ROM across updates, and I've so far not seen
> a single Lenovo mainboard which does not require this information for
> the vendor BIOS to work.

Let say, you are right/correct, Peter. Then I need explanation for this
text:
http://www.howtogeek.com/131623/how-to-clear-your-computers-cmos-to-reset-bios-settings/

*Reseat the CMOS Battery*

*If your motherboard does not have a CLEAR CMOS jumper, you can often clear
its CMOS settings by removing the CMOS battery and replacing it. The CMOS
battery provides power used to save the BIOS settings – this is how your
computer knows how much time has passed even when it’s been powered-off for
a while – so removing the battery will remove the source of power and clear
the settings.*

*Important Note: Not all motherboards have removable CMOS batteries. If the
battery won’t come loose, don’t force it.*

*First, ensure the computer is powered off and you’re grounded so you won’t
damage the motherboard with static electricity. Locate the round, flat,
silver battery on the motherboard and carefully remove it. Wait five
minutes before reseating the battery.*

Since I am kind of *naive*, and do not understand what these people are
talking about (you are opposing them, am I correct, or maybe not)?

> It's a kind offer, but not useful in my experience, for the above reasons.
All Lenovo BIOS updates require a Lenovo BIOS.

Two questions/conclusions: did you ever try what I proposed here? If NOT,
it is worth trying. If YES, total valid observation. Then DEDIPROG flash
programmer or similar of kind is a must, unfortunately?!

Zoran

On Thu, Feb 2, 2017 at 8:53 PM, Peter Stuge <peter at stuge.se> wrote:

> Michal Widlok wrote:
> > Ron - I've lost original bios, my mistake.
>
> I think that will be a problem. Lenovo BIOSes save some machine-specific
> information in the flash ROM across updates, and I've so far not seen
> a single Lenovo mainboard which does not require this information for
> the vendor BIOS to work.
>
>
> > On Wed, Feb 1, 2017 at 9:20 PM, Zoran Stojsavljevic <
> zoran.stojsavljevic at gmail.com> wrote:
> > > I'll try to find the original BIOS for Michael
>
> It's a kind offer, but not useful in my experience, for the above
> reasons. All Lenovo BIOS updates I've seen so far require a Lenovo BIOS.
>
>
> //Peter
>
> --
> coreboot mailing list: coreboot at coreboot.org
> https://www.coreboot.org/mailman/listinfo/coreboot
>
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