To enter Fastboot mode on your ASUS ROG Phone 3 , you can use either a physical button combination or a computer-based command if you have access to ADB tools. Method 1: Hardware Button Combination
adb reboot bootloader The phone will restart into Fastboot mode. how to open fastboot mode on asus rog phone 3
On your PC, open the folder where ADB is installed. Hold Shift , right-click in the folder, and select "Open PowerShell window here" or "Open Command Prompt." To enter Fastboot mode on your ASUS ROG
: Your phone will automatically restart into the bootloader/fastboot interface. Hold Shift , right-click in the folder, and
: Use the Volume rockers to scroll through the menu until you see Recovery mode , then press the Power button to select it.
This is the most direct way to access system-level menus without needing a computer.