28x2 on 28x1 starter pack. Ok right?

I still am affected by the Version 3 timing bug of 28x1 and I would like to upgrade to 28x2. Its looks like the pins are the same on both. Is it possible to use the 28x2 chip on the 28x1 starter pack?

If the pinouts are the same,

the only concern I can see you should have is to make sure you have a 5v x2 and not the 3.3v x2.

I think I bought the 2.2V-6V

I think I bought the 2.2V-6V picaxe 28x2. Thanks very much!!!