P51* P51s and Thunderbolt 3 Gen2 Dock

mundodisco8

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20 Mai 2024
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Hi,

First of all, apologies for writing in English. One of your users (Crisser67 on Reddit) mentioned that you accept posts in English too.

I have a P51s (PN 20HBCTO1WW). I installed W11 on it, and noticed that my USB-C port was not working properly. I was unaware of the Thunderbolt debacle, and while I initially thought my TB NVM was fried, turs out I didn't had an SPI chip! (in case you are curious, I don't know how it happened, but I suspect it happened when I took my laptop to a shop to get the HDD ribbon socket re-soldered). As I can solder a SOIC8 chip, I got some SPI NOR flashes, flashed the FW myself and I got "somewhere": the laptop charges, I can connect USB devices to the port, but I got a Thunderbolt 3 Gen 2 dock and for the life of me, I can't make it work.

I connect it to my computer with a TB 4 cable (Amazon Basics TB4, labelled as 240W, 40Gbps capable) and it's powered with a 135W brick. The LED stays orange.
Screenshot 2024-05-20 113119.png
If I try to update the dock's FW, the update tool says it can't see the dock
Screenshot 2024-05-17 110910.png

Other than that, the Thunderbolt SW appears to detect the controller, although the device appears as "hidden" in my device manager.
1716201320157.png 1716201367751.png

I don't have any other Thunderbolt devices to try. I am suspecting it's the dock, as it doesn't work when I connect it to a Mac computer either, but does anyone have any idea of what might be going on?

Thanks!
 
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