Won't upgrade an iPhone 12 to O26
After a day of trying I gave up. And this is a paid for app. Went through all the fixes. Cable, available space, etc, and it still did not work. Eventually I realized I was probably just getting the same errors as Apple devices produced. I asked for a refund and got an unsympathetic response telling me that I have to go through the tech team. ANOTHER 10 HOURS FOR SURE. Ultimately I told them to keep the money. I THEN FOUND A FREE APP THAT WORKED PERFECTLY. Imagine that!