SamyGO

how to add widgets samsung F8000 firmware v.1118?
how to disable updates ?
The path of the howto:
F-7xxx/8xxx/9xxx and H/HU : Service Menu -> "Control" -> "MRT Option" -> "OTN Support" -> Off
This path does not exist in my menu

How about reading WHOLE how-to disable updates?

Path to option may vary between models.

And the most important part for your model:

You first need to unlock extended service menu by sending FACTORY+3SPEED keys to TV

To install user widget, once you have root, copy its folder by FTP to /mtd_rwcommon/widgets/user

mod: UE46F8000SZXZT