How do I change the PFLASH configuration after I have flashed the the SPC58 board?

[SJobl.1]

I am new to using this level of mircocontrollers but things were going well until now. I have written some code that can recieve CAN messages and then control a servo motor using PWM. However, I have flashed the board using "FLASH programming" button in the UDE STK software and now when I try to connect to my board through the UDE STK software I get this message

Message from component 'PpcJtagTargIntf' :
Can't connect target !
 
Message from component 'PpcJtagTargIntf' :
No JTAG client found !
Please check:
- target power supply
- JTAG cable connection
- target configuration

From what I have read it seems that when I used the "FLASH programming" button the program changes the PFLASH configuration to be protected. It seems that I can set this back to unprotected while in supervisor mode.

My question is how do I do this? How to be in supervisor mode? How do I then change the boards PFLASH configuration?