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https://www.filmplatform.net/product/nuclear-now
chip, a security controller found in a generation of professional laptops. Its primary function involves: Accessing Locked Systems
| Symptom | Possible cause | Fix | |------------------------------|------------------------------------|---------------------------------------| | No response from TPM | Power/SPI wiring wrong | Check VCC, GND, pull-ups on SCLK/MISO | | Timeout on command | TPM is locked (dictionary attack) | Reboot or clear TPM (owner password) | | Invalid command code (0x1C) | Wrong TPM version (1.2 vs 1.6) | Use correct command table | | TPM not detected in OS | Missing driver or wrong SPI device tree | Add spi-max-frequency = <10000000>; in DT | | Persistent storage error | NVRAM index out of range or locked | Use tpm2_nvdefine with correct size |