View source for 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. Have to turn off the OTN Support. Path to option may vary between models.
::: 2.1. MST models (when firmware name contains "MST", e.g. T-MST12DEUC), mostly E/F-5xxx/6xxx and value H.

:::: E-5xxx/6xxx and H : Service Menu -> "Control" (or "Option") -> "Sub Option" -> "OPTION_SWU" -> "OTN Support" -> Off
[[File:E_otn_disable1.jpg | 300px]]
[[File:E_otn_disable2.jpg | 200px]]
[[File:E_otn_disable3.jpg | 400px]]
[[File:E_otn_disable4.jpg | 200px]]

:::: F-5xxx/6xxx : Service Menu -> "Option" -> "MRT Option" -> "OTN Support" -> Off


::: 2.2. Non-MST models (when firmware name does not contain "MST", e.g. T-FXPDEUC), mostly E/F-7xxx/8xxx/9xxx and high-end H/HU. '''You first need to unlock extended service menu by sending FACTORY+3SPEED keys to TV''' to make option accessible:
::::*'''[[How to send FACTORY+3SPEED keys]]'''


:::: E-7xxx/8xxx : Service Menu -> "Control" -> "SWU" -> "OTN Support" -> Off
[[File:E1.jpg | 300px]]
[[File:E2.jpg | 200px]]

:::: F-7xxx/8xxx/9xxx and H/HU : Service Menu -> "Control" -> "MRT Option" -> "OTN Support" -> Off
[[File:20140613_125522.jpg | 300px]]
[[File:20140613_125538.jpg | 300px]]
[[File:20140613_125549.jpg | 300px]]


=In case OTN support option is greyed out (very latest firmwares)=

You have to block these domains on router level:
<pre>msecnd.net
samsungotn.net
www.samsungotn.net
test.samsungotn.net</pre>
It's not possible to give any procedure to follow since each router has its own GUI/interface/settings. Check your router's documentation for how-to.