Accessing the firmware of osmocom-bb compatible phone

Michael Spacefalcon msokolov at ivan.Harhan.ORG
Sat Apr 12 17:33:28 UTC 2014

Ahmad Jan <e10007a at> wrote:

> But is this possible (using osmocom-bb) to modify phone's original
> firmware, compile it and then reload it back in to the phone to work
> according to modification?

Sure, you can take a flash dump as I described, make patches to the
firmware binary code with a hex editor, then flash the modified image
back into the phone.

But that is not what you are asking for, is it?  It seems to me that
what you are really after is the *source* for the original firmware
of, say, Motorola C1xx, or Pirelli DP-L10, right?  Well, the problem
in this case is that I don't know of anyone who has a copy of such
sources, and there is a strong possibility that, as happens regularly
with most proprietary abandonware, these sources, which existed inside
the walls of Compal and Foxconn almost a decade ago, may have been
lost altogether, went to the great bit bucket in the sky.

I am, however, pursuing a project seeking to put together a new
firmware for Calypso-based "dumbphones" that would function just like
the original proprietary fw, intended for using the phone "normally"
as an everyday phone, unlike OsmocomBB which is intended for hacking
and security research instead.  FreeCalypso is the name of my project,
and it's being developed in this Mercurial repository:

FreeCalypso does not have its own mailing list or home page yet,


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