On xmb go to settings, and all the way down to ''ebug Settings'' , then make sure your ''Release check mode'' is on ''evelopment Mode'' if it's not, restart the system
then go to settings, all the way down and make sure that NP Environment is on np, if it's not, change to np, then, on network settings for debug, make it single settings, and release check mode to development mode, DO NOT change the boot mode.
after restarting your ps3, go to rebug toolbox again all the way to left then all the way down and click ''Change active PS3ID'' it should be on ''NO'' click it and change to Use EUD5: 88 (CEX), then just wait and log in to psn