r3nrut

This was pulled directly from the XDA-Developers forums.  Member Binary Droid gets 1000 hardcore points for this milestone discovery and has put us another step closer to resurrecting the Death SPL affected HTC Dreams!!!

Thread post from Binary Droid:
One Step Closer to De-Bricking Dreams – Long Awaited JTAG Testpoints!

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JTAG Primary Pinout

These are the JTAG connection points I traced from the CPU to their test points. i’m almost 90% sure the Primary is still usable. Auxilary JTAG port is litterally impossible to get too even for the technicians that reprogram them at the factory. I didnt have much luck getting it to work but i’m posting up the pinouts so someone who has done this before can get a recovery procedure made to fix all bricked HTC-dreams.

Mode control pins are NC, cannot be traced anywere, i’m thinking they are done via software after the connection is made?

PRIMARY JTAG Pinout
1 – RTCK
2 – TMS
3 – TDI
4 – TDO
5 – TCK
6 – TRSTN

JTAG Auxilary Pinout

1 – to be posted
2 – to be posted
3 – to be posted
4 – to be posted
5 – to be posted
6 – to be posted

When you see were the pins for AUX are located you will see why I think thats not were the focus should be…their scattered in odd places, also have to remove the sim slot to access the last one which took forever to find.
Trackball has a hidden test point for the return clock as well, otherwise you need to solder directly to the connector on the main board.

AUX JTAG PORT WILL BE POSTED SOON AS I AM DONE WORK, it’s too busy here to be taking pictures and verifying everything.

I figured this should be in its own thread so those working on a solution can now focus on the software side of things.

Follow the action here:
http://forum.xda-developers.com/showthread.php?t=591048