You got a replacement phone (VZW or the insurance company) and you don't have 6.1 on it ? I would be shocked, MR2, the newest version of the software and it's been out for a while. They have not given out a phone with 6.0 in a long time. Are you sure you don't have 6.1 ????
As where to download....
I can't find it myself any more, I would call customer service and talk to a tech, to see where it is. Or just unlock the phone and put 6.5 on it (better anyway) like I did when I had mine.
If you need any extras for your 6800 I have some things for sale here...
http://forum.ppcgeeks.com/showthread.php?p=1933580