Hi Lepsus For ZE554KL, there will no longer be any system updates and maintenance. *ZE554KL had supported from 2017/8/31 to 2020/2/25. Sorry for any inconvenience it may cause. Thank you for your understanding and support. https://www.asus.com/us/Phone/ZenFone-4-ZE554KL/HelpDesk_BIOS/
