The bootloader successfully verified itself, but the next binary (e.g., uImage , zImage , rootfs , application.bin ) is:
In systems with a Trusted Platform Module (TPM) or an HSM, the verification status of c31bootbin can be extended into a Platform Configuration Register (PCR). This allows remote attestation—a server can verify that your device booted with a genuine c31bootbin before allowing network access. c31bootbin verified
Remember: verification succeeds. The failure is in what comes next. The bootloader successfully verified itself, but the next
Several aftermarket Android car stereos (particularly units based on or Allwinner T3/C31 chipsets) output debug messages over serial. The "c31" codename strongly correlates with Automotive Grade Linux (AGL) or QNX-based clusters . The bootloader successfully verified itself