Fastboot Commands Demystified: A Guide for Tweakers

fastboot commands

Android OS brings forth a world of possibilities that developers of a leading mobile app development company explore with tools and functionality for custom software development. Among the bunch includes Fastboot commands for Android devices, which open the gates to the mechanics of Android mobile. The command is used in Android development processes, debugging, and customization tasks, allowing developers to unlock and interact with the Android devices, install APKs, and create device backups. But what are these commands, and most importantly, what functionalities do they service? To find these commands out, let’s discuss them in this guide.

What is Fastboot Command?

Fastboot is the name of an Android protocol that allows the booting process to be quick between a computer and Android-powered devices. From its very name, “Fastboot” implies it all—a Fastboot protocol that makes it all “fast” as the device boots. Moreover, Fastboot is an intermediary for putting your computer and Android device in talking terms while in bootloader mode. The software known as the bootloader is the first thing to run when you turn on your device.

Also, it is the first program that runs upon turning the device on and executes with the goal of checking that everything is working fine. Basically, Fastboot is a command-line utility that developers and power users can use to undertake tasks such as flashing firmware, unlocking bootloaders, and the like. It offers the ability to communicate with the bootloader of your device directly for making changes and fixing them.


What is Fastboot Command?


Fastboot Command Structure and Syntax

Fastboot commands are structured in a straightforward manner, allowing users to perform a variety of operations on their Android 12 devices:

  • Fastboot: This is the core command, indicating that Fastboot is being invoked.
  • Command: The specific action you want to execute the codes (e.g., reboot, flash, erase).
  • Option: Flags that alter how the command behaves (e.g., -w for wipe, -c for cache).
  • Argument: The target or file on which the command is executed (e.g., logical partition with the given name and size, file name).

This structure makes it easy to perform tasks like flashing new firmware, rebooting the device into different modes, and erasing specific partitions, providing powerful tools for developers and advanced users. However, Fastboot commands can damage your device. Therefore, you need to be extra careful when selecting Fastbootd commands.

Advantages of Fastboot

Fastboot commands bring a lot of benefits, and some of them include:

Firmware Modifications: Fastboot allows modifications of the device’s firmware components, such as recovery images, boot header images, and system images. This capability supports tasks like custom ROM installation and custom recoveries.

  • Cross-Platform Compatibility: Fastboot supports macOS, Windows, and Linux, making it accessible to a wide range of users.
  • Custom Development: It is widely used in custom Android development, helping developers test and deploy firmware, applications, and software modifications.
  • Recovery & Troubleshooting: Fastboot aids in including Fastboot and recovery as well as troubleshooting operations by enabling tasks like partition formatting, factory resets, and Android system repairs.
  • Low-level Access: Fastboot provides low-level access for tasks like custom kernel flashing, firmware updates, and system recoveries.

What is ADB?

ADB stands for Android Debug Bridge. It is a powerful development tool, and using ADB helps smooth communication between computers and Android-based devices. Moreover, ADB falls under Android SDK, which is provided by Google. It finds its application when a need arises to issue terminal commands similar to those used in a Linux shell. ADB has three components: a client, a daemon (add), and a server.


What is ADB?


Key Advantages of ADB

There are many advantages of using ADB, and some of them are as follows:

  • Debugging: ADB has built-in debugging functionalities that allow developers to monitor a wide range of activities in the system and log information, which can be used for diagnoses on both emulators and physical devices.
  • System troubleshooting and maintenance: Access to system logs, utilities, and diagnostic information in ADB for better device maintenance and troubleshooting.
  • Customization: ADB allows for the tweaking and tampering of Android devices. This includes the ability to install custom ROMs and manage system configurations on a device.
  • Security Testing: ADB is used for security assessment through forensic analysis, penetration testing, and vulnerability scanning.
  • High-end settings: ADB gives access to high-end system settings and configurations that are not accessible just by regular user interfaces.

List of Essential ADB and Fastboot Commands

We have gathered a list of the ADB Fastboot commands, and the best Fastboot and ADB commands are listed as follows:


List of Essential ADB and Fastboot Commands


ADB Commands

The following commands are the most popular ADB commands:

  • ADB Shell: Executes commands directly on the terminal.
  • ADB Reboot Bootloader: Boots the device in Fastboot mode or Bootloader mode.
  • ADB Reboot Recovery: Boots the device to stock recovery or TWRP.
  • ADB Pull/filename: Pulls a file from the device to the PC.
  • ADB Shell WM Density: Modifies the display density.
  • ADB Sideload: Installs updates on the device.
  • ADB Kill-server: Terminates the ADB server.
  • ADB Install -r filename.apk: Updates or reinstalls an APK.
  • ADB Install -s filename.apk: Moves an application to the SD card (if supported).
  • ADB Restore: Restores the device’s complete backup data.

Fastboot Commands

The most powerful Fastboot commands are listed in this table of Fastboot commands:

  • Fastboot Devices: Checks connected devices.
  • Fastboot Reboot: This command will reboot your device and bring it into recovery mode.
  • OEM Unlock: Developers use many OEM-specific commands, and this Fastboot OEM unlock command unlocks the bootloader.
  • OEM Lock: This OEM command relocks the bootloader.
  • Reboot Recovery: Developers use Fastboot command to reboot the device into recovery mode.
  • Reboot Bootloader: Reboots an image file without flashing.
  • Fastboot Erase: Erases or wipes out data from the device.
  • Fastboot Getvar: Retrieves data about specific variables on the device.
  • Fastboot Format: Formats particular and super partitions on the Android device.
  • Fastboot Update: The Fastboot update command applies over-the-air (OTA) updates to the Android device. The full update package (ZIP file) is required to use this command.

Learning How to Install Fastboot on Android

Before attempting to install a new ROM, you’d better take care of a couple of requirements. You need to download and install the Android SDK with ADB and Fastboot files. For this, you would need to install the USB driver specific to your Android device, which is usually available from the device manufacturer. Lastly, also make sure that you have enabled USB debugging. This will allow you to communicate properly with your computer. To install Fastboot properly, you’ll need to extract the platform tools. Once you have downloaded the Android SDK tools, extract them to an easy-to-reach directory on your computer. It’s always handy to have the Android SDK in an easy-to-reach directory when needed to work from the command line. Finally, plug your Android device into the computer using a USB cable. Ensure the device is unlocked and powered on.

Open the Terminal window or Command Prompt, then move to the folder where you have extracted the Android SDK platform tools. Also, you can test whether Fastboot works correctly from any terminal or command prompt by typing “Fastboot devices.” Moreover, the output of this command will be your device ID if it is correctly set up. After installing Fastboot, different Fastboot commands will be used for tasks like bootloader unlocking and flashing RAMDisk. It also enables flash images like installing custom ROMs. Also, care is exercised in using the commands so that you do not cause any potential harm to your device.


Learning How to Install Fastboot on Android


Installing ADB on Windows, Linux, and macOS

The procedure for installing ADB in any OS like Windows, Linux, or macOS remains nearly identical. Let’s see how to install ADB on your computer. First of all, you must download and install the ADB and Fastboot platform tools from Google’s official sources. So, it’s better to miss third-party ADB binaries for reliability and safety. Once you have downloaded the platform tools, extract them to some directory from where you can easily access them using the command line. From here, you will have to run commands to set up ADB.

Open PowerShell in Windows or Terminal for Linux and macOS. Ensure you open the folder where you extracted the platform tools archive and run some of the commands below to initiate ADB. To check ADB connectivity, connect your Android device to your computer with a USB cable. Allow communication by enabling USB debugging for the device. Now type “adb devices” in the command-line interface and press Enter. If the setup is correct, you should get your device name listed underneath the connected devices. This verifies the connection.


Installing ADB on Windows, Linux, and macOS


Final Thoughts

That is, it for our guide to Fastboot commands. We hope you had a fun time reading this blog to know all about Fastboot commands. That is because they can help you with your Android app development. However, if you need professional app development services from top Android development agencies, look no further than Linkitsoft, as they are the best in class. Also, this page are subject to being outdated. That is because advancements in the technological world never stop. Moreover, you can check out more of our blogs that are similar to this one on our website.

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