AT&T carrier is now pushing software update to LG V10 and G4 smartphones in USA. This update carries new software version and November security patch for both devices. After the update the software versions of LG G4 and V10 devices will be H81022c and H90021x. But for LG G4 users the previous software version must be H81022b to receive this new firmware.
AT&T carrier will send this software update for both handsets via FOTA. The download file size for lg g4 and v10 devices will be 273MB and 29.1MB. The update size is large in size so connect your device to WiFi network and also maintain battery level disconnection. If you have received the automatic update notification then follow the steps that shown on your screen. You can also check for manual update from Settings > General Tab > About Phone.