Hi, just got my iphone 4.. I accidently updated it to 4.0.2. I went on youtube, followed a video about how to downgrade to 4.0.1. Went on jailbreakme.com, I think it started to jailbreak, but it was very slow, I thought it had froze and I hit cancel. Now when I go and try to jailbreak it it says 'oops... File received was invalid." What do I do! I've restored it, hard reset, everything!