Thread: Garmin firmware Understanding

In the model 60csx, you can see in the red circle I've pointed out, marking three pins, TMS, TDI and TCk.

If the photo of the post, no detail, get off the link with more quality.
Some of these photos are of models, with which Garmin does the testing, so the PCB have marked the points of testing.
Surely if we look more PCB models, we find more interesting points.

If communication is achieved via JTAG, be possible to modify the Bootblock without any risk.
On-chip Debugging many functions, to determine the input and output parameters.
In the OpenOCD documentation, we can find variety of compatible hardware and low price.

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