I went to http://www.lg.com/us/support-product/lg-47LM8600 and clicked on the software update there on my laptop.
I see some zip file and a document called "Software_Upgrade_Guide(English).pdf" which appears to be another way to update this.
You bring up a good question about these TVs. It's an appliance, not a computer?
Bob
I'm on version 04.00.17,and I'm trying to use WatchBig! by LG from my Samsung Galaxy Tab 2 10.1 GT-P5100 running Android 4.1.1 , which demand the version 04.12.21 or higher.
I've tried the software update menu from my TV, but it says there's no update available, I've checked the connection, and it's working.
Any ideas?

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