Panasonic TC-55AS530U - Manual (Page 120)

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Software update
Check if software (firmware) update for the TV is available.
Press OK to start the Software update screen. And follow directions on the
screen.
●
Set Clock first.
New software notice
(
On/Off)
Selects whether or not to display a notification message when a software
(firmware) update is available for download. Follow the directions on the
screen to download.