Almost 80% of Android users are aware of the term ADB / Fastboot but it’s just a few that actually utilize it. Although its for development use or the kinda techy Android users.
ADB – Android Debug Bridge
Android Debug Bridge (adb) is a versatile command line tool that lets you communicate with an emulator instance or a connected Android-powered device. It is a client-server program that includes three components. ADB is like a bridge that connects your phone to your computer and allows you perform a whole lot of tasks, both simple and advanced.
ADB / Fastboot can also help in unbricking phones, flashing stock firmwares, mods etc. The thing is, it gives you the ability to perform developer kinda tasks on your Android device with or without root access. In order to use adb with a device connected to USB, you must enable USB debugging in the device system settings, under Developer options.
On Android 4.2 and higher, the Developer options screen is hidden by default. To make it visible, go to Settings > About phone and tap Build number seven times. Return to the previous screen to find Developer options at the bottom.
On some devices, the Developer options screen may be located or named differently.
How To Install / Fix ADB & Fastboot Drivers On Windows
Step 1. Download 15 Seconds ADB / Fastboot Installer and install it on your Windows PC. You can alternatively download and install Intel Android USB Driver on your computer.
Note: If you encounter signature verification issues, Check Here. Always restart your PC after a successful installation.
Step 2. Launch the ADB / Fastboot installer and press Y(Yes) to install ADB and Fastboot drivers. Follow all the steps to continue the driver installation. Once completed you will see fastboot/adb folder on your C drive (C:adb).
Now the Files are installed on your desktop, next step is to configure them and setup the drivers.
Step 3. On your Andriod phone, enable USB Debugging. Older devices can enable debugging in Settings > Application > USB Debugging.
To do that on newer Android versions 4.2 and higher, go to Settings > About Phone and tap on Build Number 7 times until you’ve enabled Developer Options, then go back to the main settings menu and go to Developer Options which should just be above About Phone. Enable Android Debugging / USB Debugging mode by marking it.
Step 4. Now connect your phone to the PC with USB cable and open Device Manager. To open device manager, (Right Click My Computer and select Manage, then Device Manager) and look for your phone. It will show up under Portable Devices as your phone model number or Other Devices or ADB Interface or Android.
Step 5. Right-click on it and select update driver software.
Step 6. Now new popup windows will appear on your screen. From here click on the “Browse my computer for driver software”
Step 7. Now from the next screen click on the “Let me pick from a list of device drivers on my computer” and hit the next button. 
Step 8. From the next screen click on the “Android Phone” option and hit the next button to proceed.
Step 9. Now on the next screen, you will see all the ADB drivers that are installed on your windows computer. Now select the “Android ADB Interface” and click on the next button to complete the setup process. Step 10. ADB Drivers will now be properly installed / fixed. To check if it’s working, open a command prompt window by;
- Clicking on Start, in the search box type cmd and select cmd.exe.
- Connect your Android device (USB Debugging enabled) and type the command below in the cmd window, then hit the Enter key.
- Your device ID will be displayed. Note, you might get a USB Debugging notification on your screen depending on your Android version. Accept all on-screen debugging notifications.
- If it doesn’t work, turn off debugging, turn it on again and connect your phone.
Step 11. Inside your fastboot/adb folder (C:adb), hold the Shift key on your keyboard and right-click on an empty space and select Open command window here.
Step 12. Now the command prompt window will appear. Connect your device and enable USB Debugging. Type adb devices and hit Enter key. Your device’s ID should now show under list of connected devices.
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