Can't connect to ITEAD BT SHIELD (MASTER SLAVE) V2.2

Hello everyone!

I need your help. I got a ITEAD BT SHIELD (MASTER SLAVE) V2.2 from a friend.

I can find it only in DAT mode and only with my MacBook and not with my Galaxy ACE. If I trying to send an AT-command it doesn’t give me any respond. I tried it with every Baudrat.

If I switch to CMD mode and restart it I can’t find it with any device!

Can anyone help me?