Hi guys.
Here's my current situation. I'm not new to Treo, had a 600, which no longer functions due to the fact that i dropped it

Now got a used unlocked 650 from Ebay. Cingular phone and I have Tmobile, which maybe part of the issue? I installed the software that it came with and hotsynced it and realized that all my software from my previous treo now has transferred over. Now my Treo's acting funny and continually resetting on it's own. I can't even pick up phone calls because after I answer it, it automatically resets itself. I also noticed that the volume is kind of low on it. Even at the loudest volume, I can barely hear the person on both the headset and speakerphone. I've tried hard and soft resets and uninstalling and reinstalling the software on my PC hoping that might be the problem, but it hasn't helped. Someone had suggested possible updates, but not sure how to do that either. Any suggestions?! Please help.