The ASUS ROG Phone 3 (ZS661KS) is a beast of a gaming smartphone, but even the most powerful devices sometimes need a little technical intervention. Whether you’re looking to unlock the bootloader, flash a custom ROM, install a stock firmware update, or recover a bricked device, is your gateway to low-level system commands.
: Once in the Recovery menu, use the Volume keys to navigate to Enter fastboot and press the Power button to select it. Method 2: Using ADB (Requires a Computer) How to Open Fastboot Mode on ASUS ROG Phone 3