If you have followed all the steps and still see the error:
: The error is purely environmental. You do not need to recompile anything. Just set the variable correctly.
set ANDROID_PRODUCT_OUT=C:\path\to\your\image\folder fastboot android-product-out not set
fastboot flash boot $ANDROID_PRODUCT_OUT/boot.img fastboot flash system $ANDROID_PRODUCT_OUT/system.img fastboot flash vendor $ANDROID_PRODUCT_OUT/vendor.img fastboot reboot
Are you working with a or are you trying to flash a factory image from a manufacturer? If you have followed all the steps and
source build/envsetup.sh lunch Use code with caution. Copied to clipboard This automatically sets ANDROID_PRODUCT_OUT to the correct folder (e.g., out/target/product/generic_arm64/ Method 2: Manually Set the Path
The most direct fix is to export the path to the directory containing your images. Replace /path/to/your/images/ with the actual folder path (e.g., out/target/product/[device_name]/ ). Replace /path/to/your/images/ with the actual folder path (e
echo 'export ANDROID_PRODUCT_OUT=~/android/out/target/product/raven' >> ~/.bashrc source ~/.bashrc
/home/user/android/aosp/out/target/product/cheetah
By understanding the role of ANDROID_PRODUCT_OUT , you can overcome this error in seconds and return to flashing your Android device with confidence. Whether you are a seasoned AOSP engineer or a hobbyist bootloader unlocking enthusiast, mastering this environment variable is a small but essential step toward seamless Android development.