THIS CAMPAIGN IS STILL GOING!
Please try to read the latest posts in this thread if you would like to help!
S-OFF is still needed! Don't get happy with your HTC unlocked bootloaders, you have no more warranty! You still can't resizie your system partitions! You still can't flash the hboot, and many other things! You can get your warranty back, if we crack S-OFF!!
Well I basically did a lot of of low-level (mostly hardware) stuff to the phone recently, not so much actual development. I found out how to configure OpenOCD (don't know whether the configuration is any good, since lots of values are more "good guesses" than actual knowledge but at least it's a starting point). I found how to get the board to boot without being attached to the Lithium cell which is not important for getting JTAG access (because this works as long as the board has power supply, being booted is not neccessary for JTAG to work) but will later be needed for tracing through the boot code, since the phone won't boot without what it thinks is a Lithium cell. However, I didn't get the debugger running yet. I suspect that the processor's logic level might be too low for the JTAG equipment. I don't really have an idea how to work around that yet, I might need to build a circuit that boosts the processor's JTAG signal to the appropriate voltage level (a so-called "level-shifter").
Apart from that munjeni and Antagonist42 also seem to make progress, but I must admit that I wasn't really able to keep track of all the things that they were doing recently. So basically we're now down at the actual physical layer and messing around with the electrical stuff that's going on on the phone's board and trying to find a way of actually talking to the processor to get the on-chip debugging working.
The far goal will be getting a patched HBOOT that has signature verification removed loaded into the device's memory via JTAG, then flash a patched HBOOT image via Fastboot. If this works it will be the first S-OFF GSM WFS that's neither shipped S-OFF nor turned S-OFF via xtc-clip, but this might still be a long long way.