you have to use the shift/restore in windows

its shift/restore if you are using windows

close quickpwn and open Itunes, it will keep giving the error but it resets the firmware somehow, the phone will acitvate and let you do the rest

the fix I listed for windows also works for firmware 3.0.1, has anybody tried this one on the 3gs? I dont have one, so I cant, I changed the alt to shift, and put the phone in DFU mode . upgraded to the 3.0.1 today, the only thing is I cannot talk on the phone and have the connection at the same time, I am tethering now.

figured it out in windows, here is the jest of it
# Download quickpwn 22.5 (<a href="http://www.quickpwn.com/2009/01/official-quickpwn..." target="_blank">http://www.quickpwn.com/2009/01/official-quickpwn... and the iPhone 3G Firmware 3.0 or 3.0.1
# Press the Shift-Key on your Keyboard while clicking on “Restore” in iTunes
# Install the Firmware 3.0
# iTunes will show you a “1015 Error” – thats ok!
# Close iTunes
# open quickpwn follow the directions, the program will ask you to browse for firmware, pick 3.o or 3.0.1, it will tell you it is not the right software, that is ok, close quickpwn , at this point the phone will be in the emergency mode locked,
open Itunes, the phone will activate itunes will tell you to set up the phone as a new phone or restore a previous backup, do the restore and pick a older restore point or set it up as new your choice, I picked one from august
reinstall the benm mobileconfig
Sorry I didn't get it right the first time

I have to apologize, I may have missed a step, you may have to play with it a little, but it is possible without reprogramming the phone. I did it by accident ,
btw doing the new Iphone restore did mess up the visual voice-mail, kept asking for a password, when I used the older restore I didn't have a problem

Sorry ben I used your instructions as a template