it seems the instructions are a little vague on how to revert back to nodo... i was told to go to zune>settings>phone>update, then click resotre. sounds easy but there is no restore option there. when i click on update it says checking for updates, then it says your phone is up to date and it shows my 7720 version... so i then read that you had to place your backup file (the one with the long series of letters and numbers ) into the windows phone update folder (c:/users/username/appdata/local/microsoft/windowsphoneupdate/) which i have done. ***note*** my mango file was in there still as well. tried to see if restore option was there now and no success. so i then tried removing the mango file out of the folder and making sure the backup file was the only thing in the folder, and again no success. it still says your phone is up to date. however i then tried deleting the mango file altogether, but everytime i check for update, zune duplicates that mango file into the windows phone update folder... same on both my wifes phone and my phone. so how the heck do i get back to nodo? my backup was done properly, i have them renamed htc hd7 backup and it is the right file size...