FRP File (Factory Reset Protection File): FRP is a security feature implemented by Google to protect Android devices from unauthorized factory resets. An FRP file is a small file that contains information about the device's FRP status.
Step 4: The "ECID Registration" Step
By 2021, both Google and Apple had hardened their security. frpfile ramdisk ecid registration 2021
SSH into the ramdisk (default IP: 172.20.10.1, port 22): FRP File (Factory Reset Protection File) : FRP
[i] Success!