This same issue i am facing. This issue is coming after OTA update. My previous build with device was MMB29M and i tried to update it now it is stuck on android boot logo.
I have tried wipe/factory reset : failed.
Wipe cache reset : failed
Restore previous build from factory image : failed (I am able to install by logs but it still stuck on same logo)
installing latest factory image : failed (I am able to install by logs but it still stuck on same logo)
If anybody know the way to go out from it please let me know.
Feeling so afraid :(
Thanks,
Saurav