The counter in the eMMC firmware is higher than what the host expects. Fix: Use the programmer tool to read the current counter ( mmc rpmb counter read ), then set the host-side key to match. Only a hardware tool can force a counter reset on Hynix due to its one-time-programmable (OTP) counter bits.
: A secure area within the eMMC used to store sensitive data like encryption keys, device IDs, and certificates. Authentication Key clean rpmb emmc skhynix patched