Re: About bios flash

[Mike Banon]

Hi there, 20cm wires is a bit long in my opinion - should be 10cm, but
still - if your board is "hungry" - there may be a voltage drop and
the resulting voltage level is insufficient for the successful
flashing. As for "desoldered & flashed & soldered and nothing happens"
- if you're confident your hardware is OK, then there may be an issue
with a proprietary BIOS image that you are flashing, and I could only
suggest searching for a good BIOS online or trying to extract it from
a manufacturer's UEFI update utility if nothing helps.

On Thu, Mar 18, 2021 at 7:45 PM Aurelijus Gogas  wrote:
> Hallo again. I flashed winbond bios on asus x54h only when desoldered. But when I soldered back, there was nothing. Even light on laptop not lighting. I flashed smaller bios file by adding in begin file difference ( coppied from bricked bios).
> Are there some solutions?
> Thanks for answer.
>
> With Best Regards
> Aurimas
>
> Get BlueMail for Android
> On Mar 2, 2021, at 18:47, Aurelijus Gogas  wrote:
> > I wired like schema. Resistors used like resistor divider signal-200 Om-to flash-200 Om-200 Om-GND. Wires are about 20cm. Wp, hold, vcc connected to 3.3v. when connected to external power supply, then flashrom wrote that is promblem with erase read or something. I wired SPI also as default pins (50-53)… and as schema (31-34).
> >
> > Thanks
> >
> > With Best Regards
> > Aurimas
> >
> > Get BlueMail for Android
> > On Mar 2, 2021, at 18:27, Mike Banon < [e-mail]> wrote:
> > > BV should also work fine. Please could you describe your flashing
> > > setup, length of wires etc.
> > >
> > > On Sun, Feb 28, 2021 at 10:41 PM Aurelijus Gogas  wrote:
> > > > Hallow,
> > > >
> > > > Thanks for your work (flashrom). In hardware list there is w25q32, but mine is BV. Flashrom can not detect my chip. Is it not supported or i am doing something wrong? I wired like example in tutorial. I have  arduino mega2560.
> > > >
> > > > What i can do?
> > > >
> > > > Thanks for help.
> > > >
> > > > With Best Regards
> > > >
> > > > Aurimas
> > > >
> > > > Get BlueMail for Android
> > > >
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