Yes there are two versions (4MB and 8MB) and I already thought about a file issue.
So I checked, double, and triple checked (md5sum and others) and I know the file is good.

Anyway this does not explain why I have errors when trying to read the running Bios :(

--
Lionel Giraudeau
Extreme Computing International Support
+33 (0)4 72 52 51 65
+33 (0)6 88 38 44 85
Bull, Architect of an Open World

"This means the name of the filesystem is scratch, not crash."
Sebastien Piechurski in Smile Ticket Ticket#151022-BS0048-E2
22/10/2015
De : awokd via flashrom <flashrom@flashrom.org>
Envoyé : mercredi 17 juin 2020 23:32
À : flashrom@flashrom.org <flashrom@flashrom.org>
Objet : [flashrom] Re: Unable to flash AT25DF641(A)
 
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GIRAUDEAU-BOCQUET, LIONEL:

> The write part went fine too, and the blade rebooted properly with the latest Bios version.
>
>
> Second blade's flash try was different.
> It uses a AT25DF641(A) chip instead of a AT25DF321.
> The image size is 8MB instead of 4MB.

Double-check there isn't a separate Bios available for download for this
 blade variant. Flashrom should work then. I'm pretty sure different
sized flash needs differently packaged firmware, but am not the expert
by any means.

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