[flashrom] Question about the EC code

Marcos Felipe Rasia de Mello marcosfrm at gmail.com
Wed Nov 16 11:27:02 CET 2011

Hi flashrom people,

Reading the wiki, I understood the basics about the laptops ECs.

A friend brought to me a bricked Clevo M540SE/M550SE (main board
"6-71-M5E50-D02A") after an unsuccessful BIOS upgrade. He used these
two files:


(he found the files in this forum:

The first file is the "EC update", which need to be updated before que
second one, the BIOS itself. What I do not understand is why the EC
code is separated. According to what I understand, the EC code is part
of BIOS image and the update utility needs some voodoo work to put the
EC in a "loop", update the flash chip and then put the EC into
operation again.

It is an old laptop, with a soldered PLCC-32 chip (I do not remember
the exact model now, but it is a plain SST 512KB LPC chip). If I put a
socket in the laptop and program the chip with the WPH file (second
link) via hot swap using a desktop board (same flash voltage, bus)
will it work?


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