As mentioned earlier, the bootloader of the target device must be unlocked beforehand.zip file, and copy and paste the resultant files ( system.img and vbmeta.img) onto your ADB and fastboot folder on your computer for convenience. To see which architecture your device has, run the following command: adb shell getprop ro. You should download the appropriate version based on your device’s architecture. Google has yet to publish GSIs based on the stable release. Download links for the official Android 12/12L Beta GSIs can be found here.The last thing that we need to say is that flashing a GSI will require you to factory reset your device, so be sure you’re prepared to lose app data before you proceed with this! We recommend you make an off-device backup (such as on your PC or an SD Card) in case anything goes wrong. Once the script finishes, your device will reboot into the new OS.Įven if you don’t own a compatible Pixel smartphone, you can still install Google’s official GSI binaries to test Android 12 or 12L, provided your device is compatible with Project Treble.If you are on Windows, you can simply double click the flash-all.bat file. This command executes the flash-all.sh script file, which will then install the necessary bootloader, baseband firmware, and operating system. This will reboot your phone into Fastboot mode. On your computer, run: adb reboot bootloader.To avoid compatibility issues, a data wipe is recommended though. This will skip the data wipe for your phone. Find and remove/delete the -w flag in the fastboot update command. Using a text editor, open the flash-all.sh if you’re on macOS/Linux or the flash-all.bat script file if you’re on Windows. Optional: The resultant files would contain a flash-all.sh or flash-all.bat script file.zip file, and copy and paste the resultant files onto your ADB and fastboot folder on your computer for convenience. You can, however, retain your data by deleting the “-w” wipe attribute from the command within the script. Usually, this is done through a flash-all.sh or flash-all.bat script file that is included in the downloaded file, but its default configuration also wipes the device completely. If you have an unlocked bootloader on a Google Pixel device, you need to flash the full factory image of the Android 12 or 12L via Fastboot. Method 2: Flashing full Factory Image via Fastboot Once the installation is complete, choose “Reboot system now” on your phone to reboot into Android 12. The update should install on your phone.Where “filename” is to be replaced with the name of the file downloaded in Step 1 On your computer, run the command: adb sideload "filename".zip.This should return a device serial with the “sideload” next to its name, indicating that your device is connected to the computer in sideload mode. On your computer, run the command: adb devices.On your phone, select the option “Apply Update from ADB”.Select the option Apply Update from ADB from the recovery menu.While you hold Power, press the Volume Up button and let go of both buttons quickly. Now press and hold the Power button of your phone. You should see “No command” on your phone screen.On your computer, run the command: adb reboot recovery.Authorize your computer connection on your phone when the prompt comes up on your phone, if this is the first time you are connecting with this ADB computer. Enable USB Debugging on your phone - Go to Settings > About Phone > Tap “Build Number” 7 times, (optionally) enter your pattern, PIN or password to enable Developer Options, and then navigate to Settings > Developer Options > Enable “USB Debugging”.Optional but recommended: Verify the SHA-256 checksum of the file you have downloaded to ensure that the file has been downloaded completely and correctly.For convenience, you can rename this file to a simpler name and place the file in the directory where ADB is located on your computer. This method will also work for Google Pixel devices with a locked bootloader. To install the stable build, you need to sideload the appropriate OTA package for your device from Recovery through ADB. Method 1: Sideload Android 12/12L via Recovery and ADB Any Project Treble-compatible Android device: Install Android 12/12L GSI.For supported Google Pixels: Flashing full Factory Image via Fastboot.For supported Google Pixels: Sideload Android 12/12L via Recovery and ADB.The three methods to install the update are:
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