running itunes 10, iOS 4.2.1, OSX 10.6 i jailbroke my 3GS (new bootroom) using newest redsn0w, iphone froze on apple logo after JB while rebooting. restored successfully and tried again. froze at same spot after JB. i tried restoring again, and I received "The iPhone "iPhone" could not be restored. An unknown error occured (1611).", after a while. i tried restoring using a custom 4.2.1 .ipsw but i get an error message saying that the firmware file is not compatible. I used my friends laptop to attempt restoring to his itunes account, but I got the same (1611) message. is there a way to restore (not just reset) using hold/home buttons? I can only go DFU mode, or a frozen apple logo no matter what combination of hold/home i have used. is there another way to jailbreak 4.2.1 other than redsn0w?? help is greatly appreciated!!