nemilose

Probably 1.0

It is WebOS 3.0.

You may try to export channels list to USB, use ChanSort to sort them, and import the list back to TV.

I do not have this model of TV, but you may look for an option in accessibility submenu that allows multiple audio output. For example, newer Samsung TVs have an option that allows to use both internal speakers and Bluetooth headphones at the same time: http://www.tomsguide.com/answers/id-3209250/headphones-speakers-simultaneously-samsung-smart.html

I have UH8507 and the available internal storage is 0.11/0.62 GB. However, if I go to LG Content Store and click on some application, it says that the available internal storage is 463/631 MB.

In that case it is a WebOS 3.0 revision. To the best of my knowledge it will not be upgraded to 3.5 or higher. I think it is due to hardware differences between the chipsets.

It is probably firmware version.

UH TVs have WebOS 3.0. You cannot upgrade it to any higher version.

Try to change WiFi channel. The best option is to temporarily run a LAN cable to your TV, so you can check whether the problem is related to the WiFi connection or your ISP.

According to LG Platform Finder, your TV has Netcast 3.0 platform. WebOS 1.0 was introduced in 2014, 2.0 in 2015, and so on.

You should leave the description of the problem, together with the solution. Somebody else might have the same problem.

Did you try to unplug the Ethernet cable?

If there is iFlix app for WebOS, then you may install it. You should check with iFlix.

It works for me either with the magic remote or with an old IR remote. WebOS 3.0.

With my TV it is possible to change the input source using one button. I press it several times until the desired source is selected. Then I wait for a couple of seconds and the source is selected without pressing the OK button.