How do I update only a specific svn external on first update?

What's the incentive for carriers to hold back the first Windows Phone 7 update?

• According to Paul Thurott's sources, "the first mega-patch for Windows Phone has sat undeployed on Microsoft's servers because the software giant's wireless carrier partners--contrary to another unfulfilled promise--have refused to OK it for release." What's the incentive for them to delay the update when it's an inevitable update?

• Answer:

  Prior to much of the recent smartphone 'boom', telecommunicaton carriers had much more control over the handsets and devices that were available on their network. In many cases, they device software was developed directly by carrier. This allowed them to ensure that the devices wouldn't have or cause problems with the rest of the telecom network and also allowed them to provided a highly customized experience only available to users of their products.   This began to change as phones began to evolve and become much more complex.  A company like Microsoft or Apple is able to develop a very high quality OS to ensure that users of their devices can get a great experience, but they can only do that with a consistant software platform. Apple solved this problem by created the hardware platform as well. And by limiting it to a single device (and carrier originally), little work needs to be done to verify the functionality.   Microsoft on the other hand, isn't as interested in developing the hardware so they released the OS with a minimum set of requirements for any phone that uses the software. Since Microsoft now controls the software end, it should be relatively easy for them to update the phones to add new features and fix problems. For the carriers, this means way less control about who or what is running on your network, and in some cases removes your incentive to upgrade (if your 4 year old phone can still run the newest version of Windows Phone OS, why bother upgrading). In my opinion, the delay could be viewed as a sort of power play by the carriers, trying to wrestle back some of the control lost through other in other areas such as the iPhone.