I tried to update my htc m7 and i dont know what happen and its now showing no os installed

[AC Question]

I tried to update my htc m7 and i dont know what happen and its now showing no os installed how i can install it has noting like any zip file which i can install and i tried adb but its not transferring my file into phone what i have to do please give me some suggestion

 

[B. Diddy]

Welcome to Android Central! Were you updating over-the-air, or were you trying to manually install the update?