: Use the Volume keys to scroll through options and the Power button to select or confirm. Method 2: ADB Commands (For Advanced Users)
: Go to Settings > About Phone and tap Build Number 7 times to enable Developer Options . how+to+open+fastboot+mode+on+oppo+a74+best
: Directly flash system partitions, recovery images (like TWRP ), or boot images. : Use the Volume keys to scroll through