You are not doing ANYTHING to lcd screen and its uC driver!
You are disconnecting LCD from computer board, then doing stuff with soldering jumpers on computer board.
I didn't managed to test all versions, i need to buy switches in electronic store and solder them instead of micro jumpers.
You need to try it yourself.
I'm sure it works anyway, because it showed me 122oF instead of 50oC, and 18.7 gallons instead of 70L
Oh, and one thing, you can swap only lcd!
I made one perfect set from two.
One had broken LCD, second had broken LCD wiring harness between LCD glass and uC driver.
Just peeled wiring harness from broken glass, and connected to good glass, then i put copper keeper.