Apple does not permit this sort of downgrade because of a safety mechanism known as BBTicket, this service will not solely permit the downgrade firmware with out SHSH saved and particularly the downgrade baseband 04.11.08.
Apparently the concept of ​​server are available halfway from the developer Sim GEVEY which might proceed gross sales of probably the most well-liked sim for iPhone Desimlock 4.
Hopefully this server truly makes its look . . . . wait and see
