"Connect to iTunes" Screen
So I recently bought a 32gb iPhone 3gs, with intention on jailbreaking/unlocking and reselling. It had iOS 4.3.5 on it originally, and I have read that you need to downgrade in order to do an untethered jailbreak, so I attempted to downgrade to 4.3.3. Unfortunately this now leaves me with the "connect to iTunes" picture on the screen after the apple logo, and won't allow me to start normally. I can also get it to start into DFU mode.
Now, I have tried to downgrade still in both the connect to itunes screen and in DFU mode, both options give me errors. Ive also tried to upgrade via itunes with no avail either. I have gotten "cannot connect to itunes server" as well as errors 2005 and 1604. I've changed the "hosts" file back to original, and even kept it with the modified line and ran TinyUmbrella's TSS server. All of this with no luck.
*EDIT* by the way, I am running Windows 7 64-bit
If anyone could be of some helpt to me it would be much appreciated, I'm banging my head against the wall here trying to get it working.