Need help with loading old Minecraft 360 updates

A few months ago, I was trying to find ways to play old Minecraft TUs, when I came across Horizon. I downloaded some TU files off of the Minecraft Wiki and ran them through Horizon and it worked perfectly. Recently, I decided to do that again, but I can’t seem to get the TU files to inject properly. Every time I put the USB stick back into my console (I have a 2011 Xbox 360 S if that comes of use) and open the storage menu in the settings, it always shows up as corrupted. This USB stick is brand new and has never been used until now. It’s a SanDisk Ultra 128 GB USB 3.0 Flash Drive. I tried loading it into my main USB drive (It’s the same one, but it’s orange instead of black, and has 64 GB instead of 128 GB) which was the one I used when I first started using Horizon, hoping that maybe the new drive was just defective or something, but I got the same result. If anyone can help me, I would really appreciate it. Thanks!