After that, it will ask about installing the device drivers. It will then ask if you want to install ADB system-wide-again, type " Y" and press enter. You will be asked if you want to install ADB and Fastboot-type " Y" and press enter. Thankfully, XDA forums user Snoop05 created an installer that massively simplifies the process, by installing both Fastboot and ADB, installing the necessary device drivers, and adding these tools to your system PATH (allowing them to be run from any folder via the command line), into a 15-second operation. ![]() Getting fastboot to work on Windows can be a little challenging. Thankfully, it is possible to download and install the specific tools that we need in just a few easy steps, on all major operating systems. Step 1: Installing Fastbootĭownloading the entire Android SDK if you only need fastboot is overkill. Just like ADB, fastboot is included in the Android SDK. If you have a Nexus device, you don't typically need to mess with your SPL, as your device comes from the factory with a fairly capable bootloader. Outside of the obvious, you can also restore nandroid backups, change your splash screen, and flash system updates.įastboot can do very little without a rooted device and an engineering SPL (secondary program loader), meaning the bootloader, or HBOOT for HTC. In practical use, it is used to flash images such as recoveries, bootloaders, and kernels to your Android device. What Is Fastboot?įastboot is a tool/protocol for writing data directly to your phone's flash memory. That said, odds are, you have only just barely scratched the surface of what this handy little Android tool can do. You can flash a device when it's in the fastboot bootloader mode.If you've ever owned an HTC device or anything in the Nexus line, odds are, you have typed the word " fastboot" into your command line at one time or another. Not all Android devices have fastboot enabled.Īndroid device manufacturers are allowed to choose if they want to implement fastboot or some other protocol. Fastboot does not require USB debugging to be enabled on the device. Fastboot allows to boot from a custom recovery image. If the mode is enabled, it will accept a specific set of commands sent to it via USB using a command line. It requires that the device be started in Fastboot mode. It is included with the Android SDK package used primarily to modify the flash filesystem via a USB connection from a host computer. It is implemented in a command-line interface tool of the same name and as a mode of the bootloader of Android devices. Communication with a device is done with a Transport.įastboot is a communication protocol used primarily with Android devices. On the other side, the Server continuously monitors for connecting Daemons (as USB devices or TCP emulator). On one side the Server exposes a “Smart Socket” to Clients such as adb or DDMLIB. ![]() The central part is the Server which runs on the Host computer. Three components of adb pipeline: As outlined in the overview, this codebase generates three components (Client, Server (a.k.a Host), and Daemon (a.k.a adbd)). this makes distribution and starting the server easier.ģ. Currently, a single 'adb' binary is used for both the server and client. Then, the client sends its service requests to the ADB server. It first tries to locate the ADB server on the host machine, and will start one automatically if none is found. ADB command-line client: The 'adb' command-line program is used to run adb commands from a shell or a script. The BOOTLOADER and RECOVERY states correspond to alternate states of devices when they are in the bootloader or recovery mode.ģ. Otherwise, the device is OFFLINE, meaning that the ADB server detected a new device/emulator, but could not connect to the adbd daemon. The ADB server considers that a device is ONLINE when it has successfully connected to the adbd program within it. Its purpose is to connect to the ADB server (through USB for devices, through TCP for emulators) and provide a few services for clients that run on the host. ADB daemon (adbd): The 'adbd' program runs as a background process within an Android device or emulated system. The ADB server is really one giant multiplexing loop whose purpose is to orchestrate the exchange of data (packets, really) between clients, services and devices.Ģ. It thus maintains a list of "connected devices" and assigns a 'state' to each one of them: OFFLINE, BOOTLOADER, RECOVERY or ONLINE. Its purpose is to sense the USB ports to know when devices are attached/removed, as well as when emulator instances start/stop. ![]() ADB server : This is a background process that runs on the host machine. 7.4 Extract a backup (.ab extension) on PCĪs a whole, everything works through the following components:ġ. ![]() 3.2 Pair with a device for secure TCP/IP communication.
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