A lot of HDTVs have a USB port. My LG does anyway. The main purpose being you could look at pictures (JPEGs) on your TV.
Anyway ... assuming an update is available, you could put the update on a USB drive, and stick it in your TVs USB port accordingly. The TV would then grab the file and perform the update. If an update is available, I imagine it would include instructions. The file might have to have a certain name, or be in a certain directory for example. Again, the instructions should detail this.
Anyway ... assuming an update is available, you could put the update on a USB drive, and stick it in your TVs USB port accordingly. The TV would then grab the file and perform the update. If an update is available, I imagine it would include instructions. The file might have to have a certain name, or be in a certain directory for example. Again, the instructions should detail this.