Slipstreamed iso, but barebones install

[spo00on]

I have created a USB stick from a Windows 7 Ultimate SP1 (x64) .iso that has been slipstreamed with several years of Windows Updates, however the environment created is barebones (SP1), with no updates at all.

Is there a way to have WinToUSB create the full installation with all updates included?

I have tried creating both a Legacy and VHD instance, with the same results.

[admin]

How do you integrate the updates into Windows 7 ISO? Could you tell us more information about it?