If you downloaded a model and the textures are pink, Blender has lost the file path or cannot read the format (e.g. some obscure formats). Converting all textures to standard JPG/PNG and relinking them is the standard fix.
Why is my model pink? Blender can't find or read the image file.
Convert your files to be fully compatible with Blender.
If you downloaded a model and the textures are pink, Blender has lost the file path or cannot read the format (e.g. some obscure formats). Converting all textures to standard JPG/PNG and relinking them is the standard fix.