I have received last OTA update 1 year ago.
I'm looking for update to Android 9 / 10.
Actually I have Android 8.
Thank you for your asking. For ZC551KL, Asus will continuously provide applicable updates to our products for 18 months from the device first becomes available on the market. For any devices launched over 18 months, there will no longer be any system updates and maintenance (including ZenUI Launcher).
Sorry for any inconvenience this may cause. Thank you for your understanding and support.