If your operating system is corrupted and refuses to update, a factory reset may be required. This deletes all data on the device. Go to > System > Reset options . Tap Erase all data (factory reset) . Confirm your PIN or pattern.
If your device fails to find an update automatically, or if the OTA download freezes, use these alternative steps to clear system hitches. Clear Google Services Framework Cache How to Update Software on CAT S60