Can I extract the Stock HTC firmware (Sense) from an M8 and flash it in another rooted M8?
Hey I had the same problem I tried everything. Then I did this - I downloaded ruu file for my m8 and it works like a charm now . You just have to run the ruu file on windows while your phone is connected. Beware finding the right ruu files takes time. And also it requires you to be on the correct mid and Cid that came with your phone (or the developer Cid number 11111111)