I recently read in another thread the ability to use a P3P (GL300A or GL300B) controller with a P4 and the many responses indicates its achievable. But I want to know the steps and I want to know if you have to somehow delete the firmware from the P3P first before you load up the P4 controller firmware? I want to know if anybody has done it and can describe the step by step process. I am sure I can fumble my way through it but if someone has successfully done it and can post it would be very helpful. Do I also need to back up the old firmware?