Hidden Menu D800 ( Fail) topic

Hi friends , in my search for a solution to fix the ghost touches on this phone, I wanted to take a look into all the LG hidden tests/Device test. Now i mess the central bottons of display. Anybody can help me revert this ?
I cant open again the hidden menu. . code not works
The issue still after a restore..

A Stock rom installation will works?
Anybody know how disable device test?

Best Regards