Hello jlamo
For the rom, I think this one should work :
ftp://3gw100:3gw100@222.223.83.143/Allphone1.4.1.rar (it work for me)
For updating, you just have to the image folder into the root directory of the TF card, and reboot (be sure you have enough battery).
But please note it's what I did but it didn't work for me.... I hope you will be more lucky...
EDIT: erase the file from the TF if it worked