Can't restore, Please help.

[Brian May]

I just bought a CDMA iPhone 4 (Verizon) off Craigslist, and the guy told me the battery was misfunctioning, so I ordered a new one. I connected it via USB to my PC, it kept showing the Apple logo and no booting to the splash screen. So I tried to restore it in recovery mode and DFU mode. It won't go all the way through, but now it's showing the Connect to iTunes page with the USB pointing to iTunes logo. But when I try to restore it I keep getting an error message. I first got error 2001 now i'm getting error 21. So I went to my school, and got on the new iMacs and tried to restore and got another error code. I don't know if the phone was jailbroken and neither did the seller, as he got it from a friend. I paid 140 and would like to use the phone, PLEASE HELP.
-Thanks.

 

[Girdler]

Do you have the latest version of iTunes? Have you tried using another USB cable? Have you tried using another USB port on your computer?

 

[Girdler]

Courtesy of Apple's support site:

http://support.apple.com/kb/TS1275

 

[MoneyMaker79]

I responded to your conversation you started with me.

http://support.apple.com/kb/TS3125

It refers to it as possibly being a hardware issue with the iPhone.

 

[Europa]

Try restoring it in DFU mode.

 

[Brian May]

Do you have the latest version of iTunes? Have you tried using another USB cable? Have you tried using another USB port on your computer?

I updated my iTunes. I have not tried another cable, and I used another port. ( on the PC and iMac)

 

[MoneyMaker79]

Try restoring it in DFU mode.

It says they tried it in DFU mode but it wouldn't go all the way.

 

[Brian May]

EUROPA: Explain how, please.

 

[Girdler]

DFU Mode:

http://www.iclarified.com/entry/index.php?enid=1034

 

[Brian May]

@Girder , it's showing the Connect to iTunes screen. Starts restore, then fails.

 

[Girdler]

@Girder , it's showing the Connect to iTunes screen. Starts restore, then fails.

Still receiving 2001 for the error?

 

[Brian May]

I'm getting a constant 21 now.

 

[Girdler]

Go through the steps that MoneyMaker79 provided.

http://support.apple.com/kb/TS3125

 

[Europa]

Brian, temporarily disable your antivirus software and try restoring again.