I´ve got a problem with the recovery mode

Hi team, I hope that may you can helpme.

Few days ago,

I¨ve got the iphone conected to the mac computer, at some point it´s askme to change to the latest update of iTunes....I said OK....

and from that moment I got stuck the iPhone on the recovery mode, even if i switch off the phone an them switch on, also I try to re-install the iTunes, but nothing happens. When I switch on the phone, on the screen is appearing a music logo with a cable conection and stay there, no change.

At the moment I don´t know what else to do.

I hope that I get an answer soon from you.

Regards

Sergi Fernandez.