I got a 4.1 iphone with bad LCD. Put in new LCD, came on. Stupidly I upgraded it in iTune it to 4.2.1. Now, it's stuck in apple logo with pinwheel loop. Every s/w I've tried Quikpwn, Sn0breeze, Recboot, Redsn0w, TinyUmbrella all want me to put iphone into DFU mode. I can only turn it off, it comes back with Apple logo, then Apple logo with pinwheel. Whenever I try it in itunes (different ipsws), itunes says OK to Disconnect...still has the locked logo on iphone. I cannot put it into DFU..... Any recommends?