Hi irnote3,
1. I downloaded a remote control apps-- "lg tv plus" from Google play to remote my lg tv from mobile phone. And the apps automatically asking if any update. The apps will download to mobile first, then only install to the tv.
2. I don't think so can download without go to the store. I'm not sure are you facing the same problem as me, I can't go to lg store to update, until I saw an user use his 4g mobile network to connect to his tv to update. It's work to me.
And wish to solve your problem
Siawpo changed their profile photo