Download asus zenfone flash tool to flash stock firmware on almost every asus smartphone and tablets. available version: v1.2.4, v1.3.4, v1.4.5, v2.0.1. if you are looking for the original firmware for your device then head over to download asus stock firmware for all devices page. [*]. Xda-developers android development and hacking android general asus aft flash tool free (solution –struck on boot logo / asus screen / droid boot by xyzgsm1 xda developers was founded by developers, for developers.. Asus zentalk forum