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】 Updated Android security patch to 2021-12 Fixed an issue with screen abnormalities when playing PUBG: NEW STATE Fixed an issue with the crosshair function in Game Genie when the system language was set to Hebrew Fixed an issue where the status bar would not show the correct charging icon when charging through the bottom port