A couple days back, we saw the long-awaited arrival of Windows Phone 7.8 updates for existing models, with news coming in that first Nokia, and then HTC were making the update available to their users. If you didn’t want to wait for your phone to get its official chance to upgrade, we even shared with you the technique for forcing Windows Phone models to accept the update. Still, we’re sure some of you like to keep your smartphone nice and legit, and were waiting for your handset to be tapped for its formal WP7.8 update. If you’ve got a Lumia 710 on T-Mobile, you might want to rethink that strategy, as we’ve just learned that the carrier will not be authorizing its users to receive the official update.

One 710 owner contacted Nokia itself to find out when his phone would be seeing the update, and the manufacturer responded by apologizing and explaining that some carriers just weren’t going to give the update their approval, and T-Mobile is one of them.

Like we said, that’s not the end of the world, since you can always force the update, but it’s still some unfortunate news that doesn’t paint T-Mobile in a particularly attractive light.

Source: WPCentral