Can you change your gender on the Playstation network?
You CAN change gender, it is just complicated. If you have Chrome, you can open Developer Tools (F12) and clear out the gender field on the form and click save. Then it will let you assign a new gender.
The PlayStation Network has purchase restrictions and limits and the answer is best answered by the PlayStation Network Support related link which includes the following information: "The PlayStation®3 computer entertainment system and PSP® portable entertainment system will automatically direct the PlayStation Network account to the corresponding region's PlayStation Store. Also, once a PlayStation Network account is created, you will not be able to modify the country tied to that account."