Follow this sequence to download and install Android 5.0:
Before you search for an "update android 4.2.2 to 5.0 download," you must verify your hardware. Android 5.0 requires more resources than 4.2.2. update android 4.2.2 to 5.0 download
If the update doesn't appear, some users successfully "force" an OTA by going to Settings > Apps > All , selecting Google Services Framework , tapping Force Stop , and Clear Data before checking for updates again. Method 2: Manual Installation (Stock Firmware) Follow this sequence to download and install Android 5
If the firmware is incompatible, the device may get stuck on the logo screen. selecting Google Services Framework