Fastboot is the name of both a protocol and a utility. It's part of the Android SDK package and is used to edit the flash file system over a USB connection from a computer system. Fastboot mode must be used to start the device. It will accept a specified set of commands supplied to it through USB using a command line if the mode is activated. Booting from a custom recovery image is possible using Fastboot. USB debugging does not need to be enabled on the device for Fastboot to work. Fastboot isn't available on all Android devices. During boot, you must hold a precise sequence of keys to use fastboot. Fastboot mode allows you to alter or read data directly to the flash memory of your phone. Fastboot mode also allows you to access your device's partitions, including the data and boot partitions. Simply said, fastboot mode allows you to change crucial elements of your phone's critical data. Manufacturers frequently lock those files to prevent fastboot mode from being used. If your manufacturer has enabled the bootloader for being unlocked, you can use fastboot mode to fastboot your Android device.