[help] LG G2 screen touch erratic after flashing wrong ROM

Hello everybody? my problem is after flashing wrong ROM on my LG G2 the screen touch wont respond normaly, i used the LG support tool and after that i have this problem, i tried to install many others ROM like 20c or 10o ..... i have even tried to flash ROM for others models as D800 but nothing happened
My problem is like this video in Youtube :
" LG G2 screen touch problem after update."

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