However, this approach is not universal. For newer devices (particularly those based on Android Oreo and later), simple boot patching may not suffice. As one technician noted: "For vince [Redmi 5 Plus], since it is oreo based device, so patch boot will not work. You need to pair cpu and emmc for this device".
Using software like EasyJTAG, the technician reads the chip's Card Identification (CID) data. This identifies the exact SK Hynix model, firmware version, and the current state of the RPMB. The software will display RPMB Counter: Clean or RPMB Counter: Programmed . Step 3: Flashing the Patched Firmware (FFU) clean rpmb emmc skhynix patched
But for the technician with the right tools (EasyJTAG, Medusa, or even a Raspberry Pi with custom mmc-utils patches), cleaning the RPMB is the final unlock—a way to turn a "patched" brick back into a working device. However, this approach is not universal