Look for machid (machine ID) and bootargs . Compare these with the kernel’s expected values.
If the error comes from a specific driver (e.g., a battery gauge IC or touch controller reading a ktag ), you may need to: ktag hardware configuration not supported
dmesg | grep -i "machine\|tag\|ktag"
Some ECUs (especially Mercedes Bosch MED17 and Continental SIM2K) have "Secure Debug" enabled. The hardware configuration is supported, but the debug port is locked by the manufacturer. Look for machid (machine ID) and bootargs