Just got the new firmware today.

I will check what differs from 03.30.05 which enabled 120hz Dolby vision and freesync premium

how to acces Engineering mode (own risk!)

Remote control method

1. You will need a remote control that have the codes to send to your LG CX TV(Harmony remote,LG Factory Service Remote Control or similar)
2. With LG Factory Service Remote Control
3. Press the instart command on the LG Factory Service Remote Control
4. Now you need to input a code on your tv. Input 0413 with the LG Factory Service Remote Control
5. Navigate to system 2 and change from user to engineer in NSU (dont touch anything else!,do not hit exit ever)
6. Exit the service menu with the instart button again(Whatever button you touch first on the LG Factory Service Remote Control you need to use the same button to get out of menu)
7. To have the change active restart LG TV.After restart update normally when in engineer mode, eventually it will come up
8. Turn the TV back to user after updating(Steps 2-6 again)

Phone with ir blaster and app(not all models of phones with ir blaster work,check app for phones that work

1. Any app on a phone with ir blaster that is compatible with the phone and lets you add commands(anymote app)
2, With phone manually add theinstart command thru the app
3. Activate the instart command on the IR phone
4. Now you need to input a code on your tv. Input 0413 with the LG magic remote for TV
5. Navigate to system 2 and change from user to engineer in NSU (dont touch anything else!)
6. Exit the service menu with the instart button again
7. To have the change active restart LG TV.After restart update normally when in engineer mode, eventually it will come up
8. Turn the TV back to user after updating(Steps 2-6 again)

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