[flashrom] Re: BIOS Update

[Mike Banon]

Please note that a BIOS upgrade utility provided by your board
manufacturer - might be upgrading more things than just a BIOS. For
example: EC firmware for a controller which i.e. may be adjusting the
fan speeds depending on a temperature. As you see, simply upgrading a
BIOS via flashrom may leave you with the old version of EC firmware,
which could be undesirable.

On Tue, Aug 6, 2019 at 10:11 PM Patrick Rogers
 wrote:
> Hello,
>
> There is a very likely chance in your situation that flashrom will be
> able to read and write to the chip even if it's not on the supported
> chips list. This command simply identifies the chip and tells you if
> everything is working.
>
> flashrom -p linux_spi:dev=/dev/spidev0.0,spispeed=2000 -V
>
> You might get some error about how you might not be able to write to the
> chip, but from my experience with an ASUS BIOS chip and a Raspberry Pi,
> this was still possible.
>
> https://www.rototron.info/recover-bricked-bios-using-flashrom-on-a-raspberry...
>
> On 2019-08-05 4:39 p.m., Shaver,Zachary J wrote:
> > Hey,
> >
> > I'm considering using flashrom to upgrade the bios on a MSI B450M Pro-M2
> > Motherboard. It's BIOS ROM appears to be a MX25U12873F but I only see
> > MX25U12835F in the supported chips for flashrom. I did a cursory
> > comparison of the datasheets for the two and they look very similar. Is
> > there a chance I could flash the 73 with the 35 profile in flashrom? I
> > am aware that they are 1.8V and will need a 1.8V supply and 1.8V gpio
> > from the programmer (in my case raspberry pi).
> >
> > Thanks
> >
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