The reset procedure requires you to hold down the OK button for 5 seconds, which makes the display say 'Factory Reset?', at which point you should click 'yes'.
The phone will reboot for the first time.
When it reboots, when it loads It displays a series of messages, as follows:-
- Config Updating
- Provisioning Successful (with a green tick)
- The phone will reboot for a second time.
After the second reboot, the phone should be back to normal and ready for use.
If the message says 'Provisioning Failed' with a red cross, please let us know so we can advise the supplier and continue investigating.