Error reading LCD data – iPhone 8 Plus
I’m not sure I have an answer to your issue, but perhaps some of my experience with my first attempt at using the iCopy for an iPhone X will give you some ideas.
First off, I never had any issue reading the serial number from the screen, but could not for the life of me manage to program the screen with the correct number. My first discovery is that the Qian Li software does not give you the correct number you need to program into the screen when you hook up the iPhone directly to your computer. All you get is the serial number of the phone, which doesn’t help.
I ended up downloading both 3uTools and the JCIDRepair software, both of which reported the number I needed from the phone. At some point with all the plugging and unplugging between the phone and the iCopy, my new replacement screen stopped powering up. I discovered the connector had broken and looking closely at the connector on the iCopy board, it seemed to have a pin that was broken too. So I’m now at a standstill while waiting for my replacement iCopy board.
At any rate, check the iPhone 8 plus connector on the iCopy board carefully; they don’t seem to be the highest quality and mine is definitely broken. The upshot is that I can read the data fine, but cannot program even an original iPhone screen currently. Hopefully a replacement board will solve that.