Manipulating RPMB data is a highly advanced hardware operation. Doing it incorrectly can permanently destroy the eMMC controller, rendering the chip completely unusable. F64 box Sec Emmc Rpmb clean
to confirm RPMB size:
A refers to an eMMC chip where the authentication key has not yet been written . clean rpmb emmc skhynix
- Enter eMMC bypass mode (short CLK and GND during power-on) - Send VS command 0x33 with argument 0x8C (erase RPMB flag) - Cycle power - Re-read RPMB – counter should reset to 0 Manipulating RPMB data is a highly advanced hardware