Cant access service menu

[zimbashka]

TV: UN40D5500
software T-MST4AUSC-1018.1

I have changed region from US to KOR and have changed model to un40d5700 and now I no longer can get in service menu to revert it to stock. Originally I have used MUTE->182->POWER to get in but nothing happens any longer. Now my PS3 no longer displayed it says unsupport resolution/ check signal cable.
Please help!

[zimbashka]

SOLVED!

I have installed ruSamsungTVCommunicator, then pressed INFO on tv control and right after FACTORY button in ruSamsungTVCommunicator. Menu poped up while tv was ON, and now its back to original self.
In case someone gets in trouble can try this way.

[sm8422]

Nothing happens for me when press INFO on tv control and Factory on STC.
please help, i changed it to have Recodring option but still no recording and can't go back to US either.

Thanks