downgrade firmware

[Martin Langhoff]

If the laptops have a "newer" (but broken) OFW in /boot/bootfw.zip,
then you can downgrade it, but in the next boot it will be re-upgraded
to the version in /boot/bootfw.zip

If that is actually the problem you are seeing, then,

 - You can try to delete or replace /boot/bootfw.zip in your same
script to have /boot/bootfw.zip in sync with what you are flashing.

 - You can re-spin the "older but correct" OFW you have with a newer
version string

cheers,


m


On Tue, Oct 4, 2011 at 2:18 PM, Esteban Bordón
<ebordon at plan.ceibal.edu.uy> wrote:
> Hi all,
>
> We have several laptops with a firmware version that doesn't work and we
> want to downgrade to a previous signed firmware. I think that we could make
> a fs.zip containing olpc.fth script whith the lines to do the downgrade.
>
> I did a basic script, but when XO boots I get the message
>
> restarting to enable SPI FLASH writing Try again after system restarts
>
> After restart, the laptop shows the same message again.
>
> Somebody knows how to solve this?
>
> Thanks,
> Esteban.
>
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>
>



-- 
 martin.langhoff at gmail.com
 martin at laptop.org -- Software Architect - OLPC
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