To install Android OS on a tablet from a PC, you use your computer to download and flash a new operating system, replacing the tablet's existing software. This process lets you upgrade an old device or fix software issues by using tools like ADB and Fastboot to install a new Android OS on the tablet.
Before you install Android OS on your tablet from a PC: Critical prerequisites
Before you begin, you must take several critical steps to protect your data and ensure the process works. First, back up all important data from your tablet to a PC or cloud service, because flashing a new OS typically erases all user data. Charge your tablet’s battery to a sufficient level to avoid interruptions during the process. On your PC, install the appropriate USB drivers for your specific tablet model to enable proper communication between the device and computer. If you later want to use the tablet in your vehicle, you can install Android auto on a tablet for a safer driving interface, or if you prefer a desktop environment you can install Windows on an Android tablet to run full PC applications.
Enable developer options and USB debugging
To allow your PC to communicate with the tablet, you must first enable Developer Options on the tablet. Navigate to Settings, then About phone/tablet, and tap the Build number seven times. Within Developer Options, enable USB debugging to allow your PC to communicate with the tablet via ADB. You must also enable OEM unlocking in Developer Options to allow the bootloader to be unlocked, which is often a prerequisite for flashing. If OEM unlocking is unavailable, connect the device to the internet for a check-in, or force one by dialing *#*#2432546#*#* (CHECKIN) in the dialer app.
Unlock the OEM and your tablet's bootloader
Unlocking the bootloader is a critical step for flashing custom ROMs or modifying system partitions and will typically wipe all data on the device. After enabling OEM unlocking in Developer Options, boot the tablet into Fastboot mode. You can do this by using the command adb reboot bootloader or a specific key combination for your device. Once in Fastboot mode, use the command fastboot flashing unlock for Android Marshmallow or newer, or fastboot oem unlock for Lollipop and older to unlock the bootloader.
Download the correct Android OS image and platform tools
You need a compatible firmware build specifically for your tablet model. Download the Android OS image from the official Android website or your tablet manufacturer’s website, ensuring the image matches your device’s model number. Also download the standalone ADB and Fastboot tools (often called platform tools) to your PC. These tools are essential for executing the flash commands.
Flash the Android OS image using Fastboot commands
With the bootloader unlocked and the necessary files on your PC, boot the tablet into Fastboot mode using adb reboot bootloader or the key combination. Connect the tablet to your PC via USB. Then, execute the appropriate Fastboot commands to flash the new operating system. The specific commands vary by device, but the general process uses fastboot flash followed by the partition name (like system, boot, or recovery) and the image file name.
Finalize the installation and restore your data
After flashing is complete, reboot the tablet. It will boot into the initial Android setup wizard. Follow the on-screen instructions to configure language preferences, connect to Wi-Fi, and sign in with your Google account. Once the wizard is finished, restore your backed-up data from your PC or cloud service to return your files, photos, and settings to the device.
