I have a 3Gs which I tried to unlock with redsn0w and upgrade to 6.15 BB but right after the pineapple loaded all the way it went into DFU mode and has been there since. I DID NOT save the blobs before upgrading to 4.2.1. So far I have tried to reinstall the firmware from iTunes (failed because of the BB), tried restiring with a custom 4.2.1 firmware with no BB = failed, tried restoring with a few other vesrions of custom firmwares - to no avail. I tried to use redsn0w again- locked up half way through the pineapple load. I tried kicking the phone off recovery mode with Recboot and it just froze on the screen with the apple logo ( had to restart the pc and try like try times before I was able to get it back to DFU since the pc wasnt even recognizing it) Tried using TinyUmbrella and save some blobs - the first two times couldnt even locate the phone the third time it saved version 3.1.3?!? (the phone was upgraded to 4.2.1) At one point it gave me error 28 (which I was told is a hardware error) so I took it appart and disconected from the battery for a few hours- still nothing, went straight back into recovery mode when it powered back on. Also the battery doesnt last but only a few hours on it. Any ideas, suggestions, advice? Anything will help - im fresh out of ideas!