Here is information about customize your H series firmware.
Have the simular TV and firmware (UE50H6270 and firmware T-MST14DEUC-2730.0) was abel to root tv with actual files from today. You find them in the "rooting last firmwares on h" thread. Dont forget to lock samsung adresses at your router! If disablin otn support fails for som kind of strange reason your tv should still be unable to download and update fw directly from hell!