help me plz

[youngprince3]

i want to upgrade me phone right now i have rom 2.06.00 and i want to get the latest sprint rom i have it downloaded and when i go to update my phone it does not read my rom version to begain with but it goes up to the point where it says update and when i hit the update bottom my phones goes dark and then light back up and trys to reconnect to the pc and by the way am using vista