listen my friend the same happenned to me some days ago and just to be sincere i had to reflash it, i know maybe is not something everybodu wants to do, but for me it was the way to repair the phone, i did all the actions u have done and just like u nothing, so get ready to reflash since is the only way to get the phone back.

psd. what i did is that i reflashed with the new firmware PR 1.2 at least it was good for me since i was getting tired of waiting for this release, of course its not the official but is working perfectly in the phone.

good luck my friend with ur flashing