I recently downgraded my iPhone from 4.2.1 to 3.1.3 in order to unlock my phone for T-Mobile. During the unlocking process, my iPhone rebooted but is now stuck in a continuous reboot loop. No matter how many times I try to put it into DFU mode, it doesn't respond. I tried using iRecovery and rslite102 to kick it out of the loop using terminal, but that didn't work as well. I'm at my wits end, please help! Also, Last DFU 3g, TinyUmbrella, and RecBoot don't help either because all of the computers I try don't recognize my phone.