The battery of the smartphone needs to be fully-charged too so as to avoid any possible interruption that may occur during the installation process.
The Android 5.1 Lollipop can then be installed using the downloaded Android 5.1 Lollipop CyanogenMod 12 ROM file on the PC or Mac along with the Google App’s file. The phone’s USB drivers should be installed on the computer too.
Once the needed files have been downloaded, the handset can be connected to the computer via the USB port. The downloaded files can just be transferred to the internal phone storage.
It is important that the phone should be backed up before installing the downloaded files after a reboot has been made. Once installation is complete, reboot again the system and the process shall be completed shortly thereafter and users of HTC Desire 816 shall have the Android 5.1 Lollipop on their handsets.
Users can verify if they have the latest Google mobile operating system already running on their handset via the phone’s settings.