I changed my mac address a long time ago, then changed it back to what it use to be. I heard that if you change your PSP mac address it messes up your wifi card and cannot do remote play. Well I then tried Remote play and I registered my PSP and it found it. Then I tried to connect and it said it cannot find the registered device. I tried this awhile ago when I was on 3.40OE-A with the firmware version on my PS3 at that time. I was wondering, can I not do remote play now?? My PS3 said to upgrade to the newest firmware on my PSP, but I don't want to and then it still doesn't work.