
Download the asus zenfone 3 max zc520tl stock firmware package on your computer and then extract it by right-clicking on the file and selecting the extract option from the menu. 3. download the smartphone flash tool on your computer and then extract the file as well, using the same method for extraction as the stock firmware.. Cara flash asus zenfone 3 max x008da (zc520tl) via adb fastboot tool...