Dial *228 then tap or press SEND (call is airtime free and may take up to 2 minutes).
If updating a watch accessory, launch the Phone app from the app screen. The asterisk (*) is entered by touching and holding the 7 key.
When prompted, press 2 to update the PRL.
When the update is complete, a confirmation message appears on-screen.
If necessary, press End to terminate the call.
If the device doesn't restart automatically, power cycle the device to complete the update.
If updating a watch accessory, tap Restart.