Hi Community, Have you ever been unsure wheather your device has installed the latest system? After you go to "system update" and tap "check update", the device should show "The system is up to date". Before sleeping, you close your eyes and still ask yourself: Has my device really gotten the latest firmware? Due to various reasons such as unlocking, rooting, or flashing custom rom, sometimes your device will not receive FOTA properly. Please note that all available firmware versions are listed on ASUS website, you may follow the below steps if you want to double check. *CAUTION: Please read the firmware description under the download spot carefully before you perform any update/downgrade steps. Any mistake may cause device crash or system death permanently. 1. Visit ASUS official website https://www.asus.com/Mobile/Phones/All-series/ 2. Tap "Magnifier icon"> Key in "Model name"> "Driver & Tools"> "BIOS &FIRMWARE" [Phone] How to find and recognize the ZenFone model name? | Official Support | ASUS Global Voilà, you will see all firmware versions of your model on the page.
Additional Info: # [Zenfone] How to update firmware on my phone? 1. Auto Update (Easier Way) Settings>System>System update *Tap the 3 dots on the top row of "System update">Auto-update settings, for related settings 2. Manual Update (Normally be used in cross-Android firmware update or rooted/unlocked device) Download the firmware file into the root directory, aka the outermost place, of the internal storage>Reboot>Tap the "system update" notification *To perform cross-Android firmware update, please backup the device data first.