Since the server pushes update notice to different serial numbers by batches, it may take some days for you to receive the FOTA notice. Thanks for your patience. You may tap “System updates” in [Settings] >[System] to check if there is new firmware available. Or, you can also try to manually update firmware by referring to the following link. How to update firmware on my phone?
【Release Note】 Update from 18.1220.2201.186 Fix auto reboot issue after updating to new version
Update from 18.1220.2112.175 Updated Android security patch to 2022-01 Fixed an issue where the game field of view could not keep up with the sliding speed of your fingers in Garena Free Fire Fixed an issue where Instagram would crash when launched as a twin app Fixed an issue of ringtone popping after answering a WeChat call when using a Bluetooth headset Optimized audio parameters