Not sure the best place to stick this post so in here it goes, MODs feel free to move.
Firstly, I have downloaded the Android source code and made a few modifications (and observations) and have recompiled. I have tested my modifications in the emulator and everything seems fine. I am happy to try it out on a real device now.
Question A: Is it possible to boot the phone over USB and upload the system.img temporally until reboot for example.
Question B: Is it even possible yet to flash our own images to devices?
Secondly, I have managed to port a simple socks proxy (wrote in C) to run the the emulator launched from pTerminal.
Is there any Java coders here that would be prepared to help me write a GUI front end (Question C: Is it possible to "exec /sdcard/bin/proxy" in Java like it is in C?) for the console application?