Switching Sierra to QMI from DirectIP

[Dan Williams]

On Sat, 2014-03-29 at 15:50 +0100, Markus Gothe wrote:
> Me and a friend has reversed the generic algorithm for switching a Sierra into QMI-mode. Not the old A710 code thats Bern out their forever.
> 
> I found this binary on a FTP and reversed the Challenge-response algo, totally legal in accordance with Swedish law.
> 
> I am considering making this open source. What do you think?

To ensure total legal clarity, you usually need to do "black box"
reverse engineering like the b43 WiFi driver project did that reverse
engineered the early Broadcom devices.  One person/team does all the
reverse engineering and writes a set of specifications and posts them in
public location.  Then a different person/team, who was not involved
with the reverse engineering, writes a the program that actually does
the operations described in the specification.  This ensures that any
algorithms or other knowledge that was observed during the reverse
engineering do not cross-polinate to the implementation.

Dan