How do I Manually update my HTC Desire 820?

[Shinju R]

Manual update

how to manually update my htc desire 820 dual sim Indian model .ota updates.
or where did i get these files.

 

[B. Diddy]

Duplicate, see response here: http://forums.androidcentral.com/htc-desire-820/689197-i-want-official-roms.html#post5221284. Thread closed to prevent parallel discussions.