Provided that you have tried many android data recovery tools, most of android data recovery tools will root your phone without notification. That's to say, even you root the htc, it is hardly to restore the lost files and the old files probably have been overwritten by new content already.
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I don't know if you have tried jihosoft, they said it can recover data after factory reset android, you can give it a try.
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I don't know if you have tried jihosoft android phone recovery, they said it can recover data after factory reset android, you can give it a try.
Provided that you have tried many android data recovery tools, most of android data recovery tools will root your phone without notification. That's to say, even you root the htc, it is hardly to restore the lost files and the old files probably have been overwritten by new content already.
I don't know if you have tried jihosoft, they said it can recover data after factory reset android, you can give it a try.
[https://www.youtube.com/watch?v=2aaiRhkXWz0]