I just want you check if you got the same error, or if maybe, the screen arrived broken.
I'm using a kedei 3.5 inch SPI TFTLCD screen on a rapsberry pi 3. It works, but all colors seems to be wrong or negative (black is shown as white, and so on). Do you know if is there a solution to it? The version is 6,2, and seems to be working fine, but for these colors.