Trouble downloading Xbox 360 mod for Skyrim

im trying to download the paarthurnax ultimatum but it says invalid signature type for the load package any tips on how to fix it

It’s most likely because it’s a PC mod or file. You can’t use those as are on 360. If you search “how to convert Skyrim PC files to 360” I know there are ways. I’ve never done it myself as I’m not an Elder Scrolls player but it’s been talked about many times. Good luck!

Edit This might help you some: