There's some talk going around that the Support Tool will only work for the Black Version of the phone right now.
From Reddit and XDA "You can only use the LG Mobile Support Tool right now on the BLACK version of the phone, the white version can't even get past update recovery"
From Reddit and XDA "You can only use the LG Mobile Support Tool right now on the BLACK version of the phone, the white version can't even get past update recovery"