There is a useful tool that can help you creating ktx2 files for MSFS 2024. You also have to create new js files for each texture. If you are working with dds texture format, you have to convert them to png before starting the prosess. The tool is a script that work with the MSFS 2024 SDK (you will have to have the latest SDK installed) The tool is available here (follow the instructions from the author):image-to-ktx2