Asus Rog Phone 5S ZS676KS Stock Firmware (Flash File) The Flash File will help you Upgrade, Downgrade, or re-install the Stock Firmware (OS) on your Mobile Device. In addition, the Flash File (ROM) also enables you to repair the Mobile device if facing any Software Issue, Bootloop Issue, IMEI Issue, or Dead Issue. File Name: Asus_Rog_Phone_5S_ZS676KS_281021_CMD.zip File Size: 8.69 GB How to Flash (install): Use the .BAT file to install/flash the firmware on the device. Mirror 1 (Free)Mirror 2 (Paid)