Looks like DishTV is doing an over the air update for the T1050 terrestrial and the S7090 satellite boxes. T1020 is coming soon.
Talked to the guys at DishTV, this update over the air doesn't make major changes to the operation of the unit but makes big changes to the backend of the software which makes future over the air updates quick and simple. So if you have a T1050 go ahead and do the update.
If you have any trouble they said their Support team is ready for you to email or ring - but it seems to be smooth although fairly long at the moment. See their website for more details www.dishtv.co.nz on the home page is some info.
Nice to have such rapid updates and quick over the air updates in the future will be great.