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    Request for P775TM1 Thunderbolt SPI dump

    Discussion in 'Sager and Clevo' started by harkaz, Aug 12, 2020.

  1. harkaz

    harkaz Notebook Enthusiast

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    Hi,

    My P775TM1-G cannot detect Thunderbolt 3 devices at all.
    The only way to use USB-C ports is disabling Thunderbolt from dsanke BIOS and using the PCIe option, to get a USB3.1 hub working under a 4-lane PCI bridge. Still no Thunderbolt 3 devices are detected. As a matter of fact, the Thunderbolt Controller device ID is not detected at all.

    I suppose the Thunderbolt firmware is not working properly. I need to re-flash the U30 chip with a Pomona clip, but I have no working backup. Can someone kindly provide me with a working dump from their own P775TM1-G mobo? (Again, it is the U30 SOIC8 chip).
     
    harkaz, Aug 12, 2020
    #1
  2. Dr. AMK

    Dr. AMK Living with Hope

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    Did you try to ask for the BIOS from your dealer? If you have a TM1 model why you are using dsanke BIOS?
     
    Dr. AMK, Aug 12, 2020
    #2
  3. harkaz

    harkaz Notebook Enthusiast

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    I have already flashed the official Clevo BIOS, which did not fix the issue. My dealer offers the official BIOS (1.07.27). I use dsanke BIOS because it offers more setup options compared to stock BIOS.

    Thunderbolt firmware (U30 chip) is seperate from BIOS (U16 chip) - it is possible that I have inadvertently flashed the wrong chip while reflashing the BIOS in the past.
     
    harkaz, Aug 12, 2020
    #3
  4. Dr. AMK

    Dr. AMK Living with Hope

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    Dr. AMK, Aug 12, 2020
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  5. Dr. AMK

    Dr. AMK Living with Hope

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    Dr. AMK, Aug 12, 2020
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    joluke likes this.
  6. harkaz

    harkaz Notebook Enthusiast

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    I have already seen this thread, the problem is that the controller cannot be detected at all, so I cannot update the firmware using Intel's tool. If it was purely a driver issue, an unknown 'Base System Device' should be visible in Device Manager, which is not true in my case.

    Will do, thank you.
     
    harkaz, Aug 12, 2020
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    Dr. AMK and joluke like this.
  7. harkaz

    harkaz Notebook Enthusiast

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    If someone else needs to fix the Thunderbolt controller, here is a clean blob (NVM version 40) for flashing to the U30 chip with an external flasher, like CH341A. It is recommended to erase the chip prior to flashing.
    The U30 chip is located next to the two USB3 ports on the left side of the motherboard.

    I had to reflash BIOS, start the system, let BIOS autoconfigure and then flash Thunderbolt from scratch.
    I have noticed that playing with Native PCIe support along with Thunderbolt settings in BIOS can brick the controller, requiring external flashing.
     

    Attached Files:

    harkaz, Aug 29, 2020
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    Dennismungai, steberg, electrosoft and 1 other person like this.
  8. Meaker@Sager

    Meaker@Sager Company Representative

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    Yeah the unlocked BIOS can have interesting effects when playing with it.
     
    Meaker@Sager, Aug 30, 2020
    #8