doulCi Server is a very cool tool that can let you activate your iDevice if it is not locked, however this method can unlock iDevice if it's locked.
How it works?
- Edit your hosts file and add this red marked text as show in image below
NOTE: If you are unable to activate your device with 22.214.171.124 albert.apple.com then replace with the following
- On your iDevice follow the activation steps until the message of icloud activation lock appears.
- Open iTunes and Plug your iDevice on the USB port and accept the messages and validate the errors.
- You'll be asked by iTunes to accept unsecured albert in the middle of the process. Just accept that. When you got an error on iTunes, click OK, and finish the activation steps on your device.
- Finish the activation on your iDevice and re-plug the device again so it can be recognized by iTunes.