XPS 15 7590 (i9) – TPM 2.0 Firmware Update Bricked TPM / “TPM Cannot Be Initialized” After Reboot

Hi everyone,

I’m having a serious issue with my XPS 15 7590 (i9 model) after applying a Dell-provided TPM 2.0 firmware update. The update process completed successfully, but after the required reboot I received an error stating that the TPM module could not be initialized. Since then, the laptop is effectively stuck and I’m unable to get the TPM working again. Here’s everything I’ve already tried:

Restoring BIOS settings to default

Removing the CMOS battery to fully reset the BIOS

Reinstalling the BIOS

Downgrading the BIOS

Re-flashing the TPM firmware using Dell’s TPM update utility

However, the TPM firmware utility now refuses to run, saying that I have a “PTT firmware TPM,” which is confusing because:

1. To my knowledge, this system uses a discrete Infineon TPM, not Intel PTT.

2. This same Dell utility had no problem flashing the TPM firmware the first time.

At this point, the system won't initialize the TPM at all, and the failure only occurred after applying the official Dell firmware update. I’m stuck with a non-functional TPM and would appreciate any help or guidance from Dell support or the community on how to recover the TPM or restore the previous firmware.

Thanks! in advance.