Hi there. Just got an iPhone 3GS 16GB today. But, it seems to have died. I had originally flashed it with Blackra1n, which worked fine. However, after installing Winterboard it came up the recovery mode screen. In an attempt to see if it would help, I ran Blackra1n again but it went back to the same recovery screen. I decided to recover it with the original 3.1.2 firmware, but it reboot midway and now it's went completely unresponsive and blank, it won't even show the Apple logo. Plugging the USB in/out does nothing, rebooting doesn't seem to work, and neither does trying to put it into DFU mode. Unless I'm doing one of these wrong. Any ideas?