Finally the laptop arrived, but it turned out it was not SVP but a locked drive, so no MEC "poking" needed. I am really sad because I bought in vain a pair of MEC1503s and their reballing stencil for the worst case scenario. 🙃 Nevermind, it 'll be useful when the next one come in. 😊


MEC1503-EA2 for NM-D341: https://www.aliexpress.com/item/1005007225965028.html

BGA Stencil: https://www.aliexpress.com/item/1005007826706584.html...

No, it shouldn't. I think he meant that like "do not pull that signal to the ground"....

So in theory it is not possible to read or delete the MEC1503 by setting up the RT809H for MEC1663, as it looks like in the video. Thank you for the clarification.

Edit: Oh, wait... There's no LPC_eSPI_I03 in the D341 board schematics, only ESPI_I03 and that is connected not to GND but to GPP_A3/ESPI_IO3/SUSACK# of the chipset, via R10806 (15 Ohm).

The JTAG_RST# pin of the MEC is pulled down to GND via R8715 (10K) as the usual method to disable the JTAG port but it is easy to move it to the positon R8714 to enable it (this 10K resistor is what I referenced as "the...

Sure, this is why I mentioned. I'm excited too. :-)...

Good point.

The MoBo in the video is seemingly the NM-D341 with MEC1503, which is the exact board of the TP X1 Carbon G9.

The TP Carbon is on it's own way to me (the customer lives in another city and he 'll jump over sometime, but IDK when exactly), time will tell. JTAG jig is not a problem because I already made my custom one for MEC ECs (pullup resistors on the board, so not all the resistors soldering needed, just the mode selector) which I successfully used with some MEC16xxs before. So the hardware is ready by the time the TP Carbon arrives. Anyway, I would have...

Hi!

I found a video about MEC1503 and RT809H. I'll test it and reply back in the next few days or weeks when I get my hands on a ThinkPad X1 Carbon G9 (NM-D341).

https://youtu.be/QOw7NWO_6RM...