Motorola C139 V1.9.24 Won't Load from osmocom-bb

Michael Spacefalcon msokolov at ivan.Harhan.ORG
Mon Mar 31 08:53:52 UTC 2014


Sylvain Munaut <246tnt at gmail.com> wrote:

> If that doesn't yield anything you might need to
> dump the flash (how ? good question ... no idea what option there is
> without being able to load code. jtag, or chip unsoldering ?), and
> reverse engineer the boot loader to see what changed.

I have just posted flash images read out of two C139s and one C140,
along with an annotated disassembly of the bootloader and other
reverse eng notes:

ftp://ftp.ifctf.org/pub/GSM/Compal/

Hopefully someone will find it helpful...

To the OP: in case you haven't already figured it out, you need to use
-m c140xor with C139 and C140 phones.  I don't know what phones would
-m c140 (w/o xor) be correct for, if any.  Sylvain's direction to use
the -c option as well (and then use *.highram.bin instead of *.compalram.bin)
is also correct, because the images are bigger than the ~15k max one
can download w/o -c on this phone.

Also you said your C139 came with fw version "V1.9.24" - are you sure
it isn't V1.0.24 instead?  The imprint on those stickers is a pain to
read, too small...  If your fw version is actually V1.0.24, then it is
the exact same one I have just dumped and reverse-engineered.

HTH,
SF




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