According to promotional materials and user-submitted guides, the service typically follows these steps: IPSW iCloud Unlock - Facebook
Searching for "Unlocks Hub" patched IPSW files for iOS typically leads to services claiming to bypass iCloud Activation Locks or carrier restrictions. You should proceed with extreme caution, as many of these "custom firmware" offerings are reported as scams by the community Key Risks and Community Feedback Reported Scams : Numerous users on forums like download unlocks hub ipsw ios patched