Did you follow the iClarified Quickpwn tutorial to unlock your 2G iPhone? Redo again and make sure your follow the guide closely.

@Joey-kun

He owns a 2G iPhone. There's no such thing as official unlock or use yellowsnow for 2G iPhone. It only applies to the current 3G iPhones.

Another suggestion i can think of is to use Pwnagetool instead of Quickpwn since you're on Mac. I have done lot's of JB/unlocking with Pwnagetool and all with no errors.

Try not to select "Activation" on Pwnage Tool if you have a 3g device. Selecting activation will mess up your activation record in some cases.

Then the likelihood is that you have done something wrong in creating the custom ipsw. Make sure you check "Activation" and "Unlock" (if you haven't before).

@la0da_shashab
If i'm not mistaken, the latest Pwnagetoll is 2.2.5?

Can you go thru (something like summary) on how you did the restore from step 1? That might help in troubleshooting your problem.

errr you run the pwnagetool in the DMG and not extract it first?

I suggest you to do this:

1. Restore the phone using the normal firmware (not the one created with pwnagetool)
2. After finish restoring, your phone will be at the activation page and itunes said it need to be activated or the sim are not recognized. Nevermind, just close itunes.
3. Open Quickpwn (after your drag the quickpwn software to your desktop). Don't run it in the DMG image file.
4. Follow the instruction in Quickpwn.
5. Don't worry if iTunes open up. Just close it back.
6. If everything goes well, your device should be jailbreak and activated without any problem.