I tried today upgrading to 3.1 on my pre jailbroken 3gs.. I thought I knew what I was doing... but I'm getting the 1600 error when restoring. I thought it might have been because I was using itunes 9.1 so tried on my windows machine which is 9 and still no joy... and I'm in the right dfu mode,
So I had uploaded my ecid to sauriks server and am trying to do a downgrade... Has anyone been succesfull with this process? When I restore to 3.0 is it a pwanged 3.0 file or just a standard out of the box ispw file? I'm using a mac too. Man I also tried to remove itunes.... man what a mission and no luck on snow lepard.
I've edited my hosts file to point at sauriks repository but itunes still fails to authenticate. I'm 99% I had uploaded the keys from cydia. Where to from here? I'm just chucking 3.1 no JB on at the moment, I have to have an operation phone come monday.