How do you do backflip on new Super Mario Brothers wii?

Answer 1

you don't.

You may be mistaken for another game. If you are talking about the Wii Game Super Paper Mario. Then you must earn the ability to Flip between dimensions from Bestovius in Chapter 1-1.

After that you can flip between dimensions using the A button on your Wii Remote.

Be warned however, extended periods of time in 3D can cause damage to Mario until a certain item is acquired much later in the game.

Answer 2

You can't do it anytime. There are two times when you backflip -

1. When you are on Yoshi, shake you Wii remote. You will get off him in a backflip.

2. Cross the level in a penguin suit. You will do a backflip to taunt.

Answer 3

while running jump keep running jump still running jump then you will do a flip.

Answer 4

When you are in mid-air shake your wii remote