How To Disable Firmware updates
For this procedure you have to enter to the Service menu of the TV: 1. With TV switched off, press the following sequence on the remote: [INFO] [MENU] [MUTE] [POWER] !!!At this point be careful. Values are changeable with Left/Right keys. Moving in the menu is only with Up/Down!!! 2. You have to enable the extended service menu. There only 3 possibilities - IR Blaster from the TV [1] ; or IR device such Nokia or Samsung, or even build a IR transmitter [2] 3. Have to send FACTORY+3SPEED to the TV. 4. Then have to locate the OTN Support (Service Menu -> "Control" -> "Sub Option" -> "OTN Support" -> Off) to avoid future firmware updates. 5. Power off TV.