hi there, have lg 55uf860v , eax66466803(1.0) ., has wierd problem, just be pluging the main cable to the socket it comes on without pressing any button , after that the tv is not respondingf to the remote control or the button under the tv, i get signal on IC3000 (key1) by using the remote control or the tv button  pin 31, but tv not responding , the tv comes on hdm2 and stays there, if u connect any thing to this port nothing happen , i dont think IC3000 is the problem or emmc, is it spi flash rom? i could not fint spi firmware to check, anyone came cross this problem?

Unfortunately we don't have this dump, but you can try to update via usb with the manufacturer's firmware:
https://gscs-b2c.lge.com/downloadFile?fileId=CShV6y8xioRFozfYSku78w
Here the update guide:
https://gscs-b2c.lge.com/downloadFile?fileId=4jAtR5klBrNEtNOkADmjjw

thank you , this method might work if i can control the tv , but no button is working
thak you , its amazing fourm here

Check hdmi control chip, may hdmi have issue and cause bad information in processor chip.