I have an old Z80 based phone and a lot of data about it, including electrical scheme, firmware, tools for disassemble flash code, memory maps, etc. It is very simple from hardware point of view, but there is a lot code to disassemble. The good thing is if someone can accomplish that he has all what needs to listen traffic, gather gsm algorithms and everything what phone must have on the plate and what can be used in any way, like for this project for example.
But this is too much for one man to accomplish. Is there any chance that someone is interested? Or at least opinion is that a job that is good way to dive in details about real gsm, for the price of time it consume? Best regards!
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