How to extract the firmware of my cellular ? (or embedded systems in general)

["Norbert François" <norbertlike () gmail com>]

Hello !

I was wondering how to extract the firmware of a cellular in order to
study it... I read the paper about "Exploiting embedded systems", but
sincerely I didn't understand the part on which they extracted the
firmware. Moreover, it was performed on a router, not a cellular
(smaller device = harder ?). I remember that the THC group released
some [cellular] firmwares few months ago... How did they do ?

Thanks a lot for your replies
.
Norbert

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