Not starting, DFU-mode detected by itunes, error 1601...

I've had some serious problems with my old 3GS. An external battery pack fried my powermanagent chip, causing my battery performing extremly bad. 12 hours wall-charging for a full charge. Extremly low battery capacity. Anyway, it works (worked), it does it's thing, calling, texting bla bla.

That's history now, i got a new iPhone 4 so I turned my semi-brooken iPhone 3gs off.

Two weeks later I gave my friend the 3GS. But it didn't start, it was totally dead. Charged it for a couple of days without result.

When I put it in DFU-mode iTunes detects it and is asking for a recovery. After a couple of minutes "Preparing iPhone for restoring" I got error 1601, unknown error. (Screen is black during hole procedure)

Google tells me error 1601 is solved by:

Uninstalling/install itunes

Restart computer

Try different USB-cable

Try different USB connector

Try another computer with iTunes

But, noting works...

Any ideas anyone?