mfastboot is a modified version of fastboot , another tool from the Android SDK. fastboot is used to modify the device's flash memory, such as flashing new versions of the bootloader, radio, and operating system. mfastboot seems to be a customized or enhanced version that might offer additional features or compatibility with certain devices.
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mfastboot is powerful because it removes safety checks. That also means: mfastboot is a modified version of fastboot ,