In the first part of the movie, Oz: The Great and Powerful, Oz's personality with his assistant was kinda mean, he even said to his assistant that "You're just a trained monkey." Also he said "You're not my friend".
We also noticed about deceiving women with his "Grandmother's Music Box".
Then during a Tornado/Whirlwind he was about to die but shouted "I'm Going to change, I promise etc....."
Then when he arrived in the land of Oz he still had the same mean attitude with the monkey and in deceiving women with the witches.
My question is: Did Oz actually change? (except for the greed of gold). I thought the movie was also pointing out about Changing his attitude.