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Edukatico will keep you updated from time to time. (You can stop this at any time.)

If your device still supports official updates, these are the safest options:

You'll also need a few tools, namely ClockworkMod recovery, the fastboot files you used to unlock your bootloader. Grab them here: Android Central Forum

For older devices where OTA is no longer an option, manual flashing is often required: [GUIDE] Manually Flashing Official 4.1 Jelly Bean

To download and install Android 4.1 (Jelly Bean) firmware, you can use official Over-the-Air (OTA) updates or manual flashing methods depending on your device and current software status. Official Update Methods

Go to Settings > About device > Software update and select Update . If an update is available, follow the prompts to download and install it over Wi-Fi.