Hello everyone,
a couple of things.
First: LG Service Remote Control app actually works. it only costs 1.99$ and its available at play store.
IMPORTANT: application works through IR blaster and thus you need to download it to a phone that supports it. I know for sure that the latest XIAOMI phones still have one. I used a XIAOMI Note 8 Pro.
https://play.google.com/store/apps/details?id=by.makarov.smarttvlgrc&hl=en&gl=US
Second: After downloading the app, press ADJUST button. It open the service menu. Go to AREA Setting. My TV was bought in US and moved to Europe/Greece. The default settings were:
Area Option: 22282
Continent Index: 10
Language&Country: US
HW Settings: US
At the location setting at the menu was showing: United Stares, Mexico, Canada, Others.
I found a friend's LG TV purchased in Greece at the same time and did the same. Navigate to the Area option menu and copied its settings
Area Option: 3122
Continent Index: 50
Language&Country: EU
HW Settings: EU
Went back to my TV, modified 22282 to 3122, automatically Continent Index, Language&Country, HW Settings were changed.
Close TV, re-open it, it displays WebOS, doing its staff for a while, and the you have the same menu with a locally purchased TV, Location, Broadcast area, menu language. My TV now displays the menu in Greek, and at the LG store i can find local apps such as COSMOTE TV, ERTFLIX, TuneIn Radio etc.
Lastly: 3122 is EU general. In some posts i show that 3122 is UK and 3124 Italy. By using 3122 it popped up all European countries to choose from.
Thank you,