Need help with iphone 3G please
 

Hi to all, a need a help with iphone 3G, try to restore custom fw 4.2.1, but the itunes still get errors "1600" a try with iReb-V4, but no succes still the phone give me error "1600" any ideea is welcome.

Error 1600
Custom firmware can't be restored on a device with DFU Mode. Use Recovery Mode.

I already tried this thing

use this solution perhaps it can help you
1- open Itune
2- Connect your Iphone
3- Open tinyumbrella and start Tss..
4- Flash your Iphone
When error appears on Itunes use tinyumbrella
5- select your device
6- do exit recovery mode
If this solution isn't good Flash your Iphone with 4.1 and it will be OK.

iREB uses 4 to correct error 1600, then use version 4.2.1 with itunes, and ready redsn0w