Trurail Simulations have been having site issues for some reason, they haven't posted anything about it since June 8th.
Did you put it into your Railworks\Assets\JL\ArizonaDivide folder? The system.ap is the fix as in this screenshot.
Yes, I have done that, I opened the Train Simulator 2021, clicked on quick drive, create a new train set, I clicked on the Arizona Divided ATSF Dash8 and there wasn't the logo.
Try putting those 3 files in the System.AP file into the textures folder in the ArizonaDivideROWAssets.ap folder. I think that is how I did it about 4 months ago.
Don't put this file in to the ArizonaDivideROWAssets.ap folder Extract the ArizonaDivideROWAssets.ap folder with 7zip then patch this file you downloaded
But you can't extract a file that is installed with the dlc, I mean I can't extract ArizonaDivideROWAssets.ap. Plus I'm using Winrar.
I downloaded and extracted the texture folder, I putted in there the patch file and still dosen't working.
I hadn't driven this route for a while but use to have the textures working but an update to the route must of stop the textures from showing as I didn't have them when I just tried a scenario. To get the textures working just put the textures into the textures folder as shown in my screenshot. Just open the system.ap file and extract them into the Arizona Divide folder and copy and paste them into the textures folder.