Unlock/Jailbreak/Activate Restored Iphone Problems

[sum64]

Okay, so I've had my iphone for about 3 months now and this is the 1st time I have had problems with it.
I have a 1st generation iphone, so I restored my iphone and now I can't unlock/jailbreak or even activate it.
I've used Ziphone and iLiberty to try to unlock it, but it always gets stuck in DFU Mode, at one point I even left on my computer to see if it would unlock overnight, but it didnt, then I eventually had to restore it AGAIN!
When its in DFU mode the usb cable part that goes into the computer and the itunes logo is on the screen.
Then when all else failed I tried using WINPWN, and it had troubles putting it into recovery mode, and then wouldnt do anything. I also tried creating custom firmware with it, but whenever I try to restore my iphone with ANY firmware iTunes always says something and then "ERROR 20" and my iphone disconnects.
I have been trying many different ways with these 3 programs, and after each way, I restored my iphone and tried it another way.
I have been doing this for 3 days, so if anyone could help, please help me?
THAT'D BE AWESOME. please and thank you

[satch2501]

First of all, DFU =black screen. Recovery = usb cable with itunes logo. Second, follow all of the steps to the letter with wnpwn. Do not skip anything and make sure that you follow the steps for your phone. There are 3 units that can be pwned. The iphone 2G, the ipod touch and the iphone 3G. If you don't pick the proper unit, you can screw up your phone big time. Then, make sure you have the latest version of itunes. Then make sure you have the 3.9 and 4.6 bin files for the baseband upgrade. Then once you have all of that, create a custom firmware using wnpwn (it supports 1.1.4, 2.0 and 2.0.1) then you will need to ipwner your itunes with the new firmware you created. Then, you put your phone in DFU mode (not recovery) and shift+click restore and pick your new firmware and voilà. If you are unsure, go to blog.iphone-dev.org

[NaysNay]

Recover to the original firmware before upgrading to the pwned one. I had this problem once, and did so and it worked.

[sum64]

(lost text)

i am currently getting error 1601

[sum64]

PROBLEM SOLVED!
i just uninstalled all APPLE programs on my computer, restarted my computer, installed it again, restarted again, and then opened WINPWN and clicked "Browse .ipsw"
and chose the original firmware and then after i clicked "iPwner" and chose my custom firmware.( I left WINPWN on during restoring/updating my phone.) Then I put my phone into DFU mode and held shift down and hit restore and chose my custom firmware!
Then VOILA, my iphone worked.

THANKS FOR THE REPLIES EVERYONE