IPhone Jailbreaking issue

Hey, i have a old iPhone 2G which i got from a friend and was previously jailbreaked by me before, but he had some errors with Cydia so i decided to re-jailbreak it.
So anyway, i went ahead and downloaded ipsw file (iPhone1,1_2.2.1_5H11_Restore) and the QuickPwn, and the BL-39,BL-46 files, so when i clicked on iTunes restores button while holding SHIFT and clicking the restore button and clicked the ipsw file, it says iTunes is prepairing the iPhone but after a few seconds it shows this:
The Phone “iPhone” could not be restored. An unkown error occured (20)
And now the screen on the iPhone is showing the iTunes logo and a USB Cable.
I tried re-installing iTunes, but the same error still happens, i dont have any firewalls/AV’s installed on my pc if that might be the case and i am quite familiar with iPhones/Jailbreaking them.
Thank you.
Answer #1
2.2.1???
Why not 3.1.3?
Answer #2
prozac4312 replied: 2.2.1???
Why not 3.1.3?
yep, my bad for downloading 2.2.1 lol.
Well ill have to wait for another hour for the 3.1.3 to download and then well see if the error keeps poping of.
Thanks.