Import them into blender and select the whole model and click unwrap. Or you select the whole model and in the uv editor scale up the UVs. They were shrunk to fit inside the 8x8 texture.
Sorry that's on me. I scaled the UV to zero, so they could fit Inside a small 8x8 texture. The quickest solution is to simply do a smart unwrap.But if its not to much of an ask. what type of texturing a you trying to do exactly?