Hi, I have a 16gig 3GS that was running 3.0 blackra1n'ed. Had been working fine for a long time until yesterday. I got an error message that the phone needed to be restored as it couldnt make or receive phone calls. Perfect timing also as I was out of town and using the GPS, that is a whole other story. Got back home today and tried to pwn. Went through the whole process and when I tried to restore the custom .ipsw I got the 1600 error. Came here and saw that new version of BlackRa1n was out. I am not overly concerned with unlocking so I figured I need my phone working so I will just restore/upgrade through itunes to 3.1.2. It wont even do that. I get stuck with unknown error 23. I also tried downloading a virgin version of 3.0 - same thing error 23. I have also tried all of the above in Recovery(icon screen) and DFU mode(black screen) cliffs: -blackra1ned 3gs gave restore message -tried to pwn to new software 3.1.2 got 1600 error -tried restore/upgrade with itunes - unknown 23 error -tried restoring with virgin 3.0 (current version on phone) got 23 error -not sure what to do. Thanks for reading.