Step 1. First make payment your udid or serial number will be registered on server automatically after the payment. (if you dont know your udid or serial number download the tool firts it will show that info).
Step 2. Download MDM Tool on your computer (Mac or PC)
Step 3. Restore your Device With iTunes when the restore is completed iTunes will start to count down from 10 seconds. Immediately close iTunes and open the MDM tool
Step 4. Wait till device boot after restore and show the welcome screen, press the Bypass MDM Button on tools wait till it show MDM Bypass It's Done Message, after that follows steps on your Device