Hi,

I have replaced my old car GPS with a HTC TYTNII (also known as Tilt, Kaizer and a few other names).
The old one used to work fine but the HTC doesn't find any satellites if I keep it under the windshield. If I open the sunroof or keep it out of the side window it finds satellites pretty quickly and then it will continue to work in the windshield, so just the lock is impossible inside the car.

I have tried various ROMs (WM 6.1 and currently on WM 6.5), nothing made a difference.

I don't want to use an external antenna as I won't be able to use magnetic ones (the car frame is 100% aluminum) and I don't quite want wires sticking out anyway.

Are there any software tweaks that can be done in order to get a lock with weaker signal? If it gets a lock then the reception is pretty reasonable (3-4 satellites, sometimes even 5), enough for a decent navigation through the city.
I have installed QuickGPS and has the information up to date. I also have a SIM card with data enabled so it can do a basic triangulation before acquiring satellites but still cannot find anything unless I take it out of the car.

Thanks.