Thanks.
This one did not boot, it don't negociate 19V on USB-C ports....

Thanks for your work, unfortunatelly the downgrade to bios version 1.26.0 did not fix the issue. Now i run windows and on the first reboot the Windows installed bios v1.29.1 also with no difference. I notice something strange with the bios setup GUI for v1.31.0 in windows, Backup Embedded Controller has the current version 1.8.1 and the installer version is 1.0.9. Maybe the linux firmware utility installed a bios that was made for this platform but not exactly this motherboard?

Thanks!...

Hi everyone,

I’m dealing with a firmware issue on a Dell XPS 9315. After PopOS build in firmware update tool found and install the BIOS v1.29.1, the laptop started showing TPM errors on boot:

• Alert! TPM could not be initialized.
• Alert! TPM device is not detected.

Since then, the TPM is completely missing in BIOS and in the OS.

Here’s what I tried so far:

• Downgrade is blocked because BIOS 1.29.1 is marked as “critical.”
• Reflashing the same version does not help.
• Left the laptop without battery for a week – no effect.
• Updated to BIOS 1.31.0 – problem

...

Thanks, found it under one of the RAM chips...

Where is the bios chip located on this PCB? I found only the 1MB ROM chip.