HELP please I am a mac user and hav a jailbroken iphone 4 with ios 4.1. I tried to jailbreak to ios 5.0.1 yesterday using redsnow. After doing that I looked at my iphone and it said ios 4.1 still with cydia in it. Having realised the fact that I forgot to update the ios version through itunes, I tried doing that immediately and but got error 21. I then used redsnow- extras- fix recovery to recover back to ios 4.1 without cydia. The morning, I tried updating to ios 5.0.1 via itunes again but error 21 of course then set it into DFU mode and pressed option and used the custom ipw downloaded from the web (iphone 4 ios 5.0.1). After doing that, I got error 1600 now and tried using redsnow to fix recovery again but got error. The screen is now black on my iphone4 and I really dun know wt else to do.