Sometimes, the OTA updater may encounter teething issues like not downloading an update correctly, showing a message saying ‘unable to get download status’ or just generally running slowly.Most of the time, these issues can be fixed by clearing the cache for OTA
From the Android home screen navigate to SETTINGS > OTHER > MORE SETTINGS > APPS > OTA UPDATER.
From this window choose FORCE STOP and then choose CLEAR CACHE and CLEAR DATA.
Exit back to the main menu. Turn off your box and unplug for 5 seconds. Turn back on and attempt the OTA update again.