iTunes Not Updating / Working
Hello, I recently got my dad's old iPad (iPad mini 4) after dropping my other iPad, and I was setting up my iPad when I noticed it was at version 9.2.1 . I was setting up the update by connecting my iPad and PC (Windows 7 Ultimate) through a USB cord and updating through iTunes. When I clicked on "Update" on for my iPad on my PC, a notification popped up saying, "To update your iPadOS to 15.1, you need to install the latest version of iTunes." I went to apple.com and searched for the latest version of iTunes and installed it. When I opened iTunes and checked for an update it said, "This version of iTunes (12.10.11) is the current version." The newest version of iTunes is currently 12.12.2.2, so I tried updating from a pop-up saying "Apple Software Update", but It said that my current version of iTunes is up to date. With this problem, I can't update my iPad. My PC is x64 bit.
Please help!
iPad mini 4, iOS 9