I have an iPad Air 2 that is currently on iOS 10.3.2, but it's in restore mode. I need to update it to iOS 14, as I have several Apps that will NOT run on anything newer than 14. I have attempted to do it through iTunes by downloading an .ipsw file, but I keep getting errors that say it can't be restored. Is there another software tool other than iTunes that I can use to upgrade the firmware to iOS 14.2 or 14.3? I don't care if the process wipes the data on it as I have a backup I can restore to it, but I need to find a way to get iOS 14 on it. Thanks