hi there! im browsing thorugh and thinking of posting question about my XV6700...
im sorry to hear that ur having difficulties activating ur phone...i have verizon but i would take ur phone to the Alltel store and ask them to re-flash/install the original WM software since u were not able to get it to work.
for the kitchen software, yes u can. this webcite tells u about new WM
http://forum.ppcgeeks.com/showthread.php?t=20492&highlight=kitchen
this is where u can download it
http://ppckitchen.org/downloads/buildos.msi
here are the instructions:
http://ppckitchen.org/joomla/index.php?view=article&catid=32%3Ainstallation&id= 58%3Aqhow-do-i-install-the-ppckitchenq&option=com_content&Itemid=54
i hope this helps.