I have TechTool Pro 10, running on an iMac w/MacOS 12.13.5 and iTunes 12.7.5.9. I would like to check my old iPhone 4s (iOS 9.3.5) battery. I have "trusted" my iMac via my iPhone 4s but it is not showing in iTunes or on my desktop. TTpro is able to run a battery test on my iPad Air iOS 11.4. I tried Googling an answer but no luck. Is TTpro 10 compatible with iOS version 9 devices? I couldn't find any mention in the TTpro manual. I have also ran "System Information" and checked the USB connection. It shows my iPhone 4s is connected (also, it is charging the phone). Suggestions? Thanks in advance.
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