iPhone 3G stuck on restore error 1015 with no SHSH saved. Please help!

I have tried to follow the instructions on how to post appropriately, but I have to admit I am a novice and searching in desperation for some help.

1. iTunes 10.6.3.25
2. I don't know what version of iOS it had before it was wiped
3. Windows 7
4. My friend bought a second hand iPhone 3G. She wanted to wipe the previous users info and asked me for my help to set it up. I didn't know that the phone was jailbroken, and I didn't know that erase all content and settings would wipe the OS. When the wipe completed it would not respond unless in DFU or recovery mode. I put it in DFU mode and onto iTunes but the restore fails with error 1015. I did not have tinyumbrella installed and so do not have the SHSH saved as I didn't know the phone was jailbroken when I wiped it.
5. Full log here: Browning - Pastebin.com

My friend doesn't care whether the phone ends up jailbroken or not we are just deperate to know if theres anything I can do to fix it! If I can't then I'll have to give her my own 4S and I really don't want to do that! : (