Sense 6 Stock Rom For M7? Where To Get It?

[AndroidHTC2013]

Where can I get Sense 6 stock ROM for my HTC One M7 specifically? It was the one used to automatically update my phone through OTA?

Could I use the one built for the M8 or no?

Gonna return back to stock Sense 6 after an failed attempt to downgrade back to Sense 5.5

 

[AndroidHTC2013]

Help somebody? This is for an AT&T version