Okay i upgraded to 4.1 last night after i jailbroke my phone I didnt know that you couldnt get the jailbreak with this upgrade so now im stuck. I have watched a bunch of videos on how to downgrade my phone. I have been downloading the 4.0.1 firmware file and they are always in ZIP files i unzip them and they looking nothing like videos i have seen on youtube. I hit shift and restore and look for the files and find the firmware but then like its not there? I have my things saved on cydia and i have tinyumbrealla. So basically i need help with the firmware file i guess. I run windows btw. Thanks for the help.